جميع اعطال التليفزيونات والفيديو بكل انواعها - الصفحة 2

عطية حسن محمود · 01:16 PM

Beko TV Model: 12.8
The +Ub voltage (+118V) was not present, fault in switching power supply
Transistor T901 (SK2545 or P3NB60FP) had failed. Replace it and check C908 (22uF, 35V) replace it with 22uF, 50V. Also C912 (1uF, 25V) replace it with 1uF, 50V and D906 (1N4148) always replace it with 1N4948T
(Jo)

<HR align=left width="100%" SIZE=2>
Philips PLASMA TV Model: 42FD9954 (S FM24 Chassis)
Green dots flashing over the screen in AV mode
Change resistor value R3641 from 1K to 100ohm
(Ab)

<HR align=left width="100%" SIZE=2>
Beko TV Model: 12.8
No audio
Check and replace ic101 with STV2246C and check and replace c135 (100uF, 16V) replace it with a 220uF, 50V. Also check and replace C308 (470uF, 16V) replace it with a 470uF, 50V
(Jo)

<HR align=left width="100%" SIZE=2>
Beko TV Model: 12.8
Red or Green or Blue screen
Check and replace on crt module : D702, D703, D704 (all 1N4148) replace with type 1N4948T
(Jo)

<HR align=left width="100%" SIZE=2>
Toshiba Video Model: V642UK
VCR is locked out, no sound, noise picture and front panel buttons do not work. NVRAM has been lost
Access the NVRAM menu. On remote hold A-Dub button for 10secs, VCR display will read TEST, then hold the menu button until the NVRAM menu is displayed on screen. I do not know the codes for this model, if anyone knows them please pass them on!
(James)

<HR align=left width="100%" SIZE=2>
Philips TV Model: 24PW6005 (A10E Chassis)
Intermittent or no sound, mute transistor not switching on, ref 7701.
Possible software problem! replace micro. Circuit ref 7064 part no 3111 250 545 11. If thats too expensive then try fitting a 22k resistor collector to base of transistor 7701 in mute circuit!
(Phil)

<HR align=left width="100%" SIZE=2>
Sharp TV Model: 37DT-25S
Dead, fuse ok
Replace Q701 (P3NA80FI) with a P4NB80FI-mbr. Check Q702 (BC338). Replace R703 (5,6E, 5W), all components in supply. Check print for poor contacts
(Rob's tv-service - ffice:smarttags" /><?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com

<ST1

lace w:st="on">Holland</ST1

lace></st1:City>)

<HR align=left width="100%" SIZE=2>
Panasonic Video (K Deck Chassis)
Procedure to display fault codes
Press FF, REW and EJECT simultaneously OR where a Shuttle Dial exists press EJECT and CUE Forward
(Anonymous)

<HR align=left width="100%" SIZE=2>
Philips Video Model: VR6264
No video or RF output. 12.3Vd.c. rail from 7002 (BD678) dead
Fault traced to dead short component located on PCB502 at componet ref no. 2024 (Philips blue radial capacitor 330uF, 16V). Philips part number 4822 124 40849. Cap has markings 036K0 T0 on it. Replaced and all sprang into life ok
(Andrew Finch)

<HR align=left width="100%" SIZE=2>
Continental TV Model: CE3701 (Grundig G1000 Chassis)
Note on obtaining a replacment remote
If you try to get a replacment remote no one will recognise it but the Grundig G1000 RC1/2/4, will work fine
(Arl)

<HR align=left width="100%" SIZE=2>
Alba TV Model: CTV4809
Sound but no picture except for a couple of horizontal colour lines
Replaced the frame chip TDA8356, set now ok
(Errol Rankin)

<HR align=left width="100%" SIZE=2>
Goodmans Video Model: VP2500
Video keeps spitting out tape
Re-align video deck, clean dirty heads etc, all now ok with vcr
(Errol Rankin)

<HR align=left width="100%" SIZE=2>
Sony TV Model: KVX2952U (AEIC Chassis)
Int black and white picture, colour disappears
Replaced IC TDA4580 and all ok
(Errol Rankin)

<HR align=left width="100%" SIZE=2>
Sony TV Model: KVX2972U
On/Off switch popping out when pressed
On/Off switch push pad broken, repaired push pad and switch now ok
(Errol Rankin)

<HR align=left width="100%" SIZE=2>
<st1:City w:st="on"><ST1

lace w:st="on">Ferguson</ST1

lace></st1:City> TV Model: 59K7 (ICC5 Chassis)
Severe vertical jitter on picture, horizontal sides of picture ragged
Replacing the TDA4950 cured the fault
(Errol Rankin)

<HR align=left width="100%" SIZE=2>
Jvc TV Model: C14E1EK
Tuning drift,worse at high channel no's
Dry joints inside tuner unit, connections between edge of pcb and lugs
(E.T.Sandy)

<HR align=left width="100%" SIZE=2>
Thomson TV Model: 24WK25US (ICC17 Chassis)
No/Low contrast after EHT flashover
Check/replace TL02 and TL59 in the beam limiter circuit
(Mick Pope)

<HR align=left width="100%" SIZE=2>
Sony TV Model: KVJ29MN21
Unable to switch on with remote and no LED display at the front of set
Due to STBY 5v missing. Checked and found the 5v reg/reset IC002. (L78LR05D) was s/c, replace the IC to clear the fault
(Anonymous)

<HR align=left width="100%" SIZE=2>
Philips TV Model: 25PT4103 (L6.2 Chassis)
Blank screen no audio. No results from tuner or SCART socket. When G2 on LOPT is wound up a red line is visible
Check R3438 (3R3). In my case this was o/c and a replacement restored normal opperation
(Paul Godfrey)

<HR align=left width="100%" SIZE=2>
Grundig TV Model: T55-640 (CUC 6300 Chassis)
Sleep timer box on screen, remote & front buttons not working
Changed the EEPROM IC847 (24C04)
(Urhoej)

<HR align=left width="100%" SIZE=2>
Akura TV Model: AP2821-S
Dead
Replace RP05 (1 meg, 1/4 watt)
(Darren)

<HR align=left width="100%" SIZE=2>
Toshiba TV Model: 2573
Stuck in standby.
Replaced ZP82 (o/c) And tuner (internal short)
(David Roberts)

<HR align=left width="100%" SIZE=2>
Toshiba TV Model: 28WD98B
Stuck in standby, 16 volt line low at approx 8 volts
Replaced C872 (220uF, 50v), original had gone low in value
(David Roberts)

<HR align=left width="100%" SIZE=2>

عطية حسن محمود · 01:19 PM

Bush TV Model: 28ZKF
TV seems to be dead apart from the front leds
On main board check Ntype TX BD441 which is clipped to the main heat sink. The clip can come loose causing the TX to overheat and melt its connections to the CB. Remove TX test and if OK solder back on making sure TX has good connection to the heatsink
(Anonymous)
<HR align=left width="100%" SIZE=2>
Goodmans TV Model: 285NS
Buzz on sound when volume at low level
Dry joints on earth pegs of heatsinks of audio and frame output ICs - confirmed by comet service, long time ago!
(Steve)
<HR align=left width="100%" SIZE=2>
Vestel TV (11AK19 Chassis)
Screen blanked out,with 4 coloured lines two thirds of the way down from the top of pic. Sound OK
R704 (100 ohm resistor) connected to pin 6 of the frame output chip was o/c
(Anonymous)
<HR align=left width="100%" SIZE=2>
Philips TV Model: 28PW6332/05
Loud bang internally, then completely dead. Plug fuse ok. Set about 4 years old
Internal 4A fuse blown. Bang was 330pF cap 2540 across PSU MOSFET exploding, suspect went s/c. Diodes 6513 & 6511 cracked and s/c. Replaced C2540. Could not get diode 1N5062/BYW55 rep, so replaced all 4 diodes with BY399. PSU MOSFET removed and checked,ok. Voila
(Andrew Wilson)
<HR align=left width="100%" SIZE=2>
Panasonic TV-Vid Combi Model: TX-14/21GV1
No operation, standby led blinking
Replaced C840 (47uF, 25v) which had gone low in value
(David Roberts)
<HR align=left width="100%" SIZE=2>
Lg TV Model: CF-28A50T (PC-58A Chassis)
Flyback lines on pic
Check resistor R351 in front of TDA8350Q. It should be 3.6 K. I replaced with 3.8 K and it worked fine. Additionaly check: R708, FR704, FR359, Q351, Q345. If fault persists try replacing the TDA8350Q
(Nikita - <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com

ffice:smarttags" /><st1:country-region w:st="on"><st1

lace w:st="on">Germany</st1

lace></st1:country-region>)
<HR align=left width="100%" SIZE=2>
<st1:City w:st="on"><st1

lace w:st="on">Ferguson</st1

lace></st1:City> TV (ICC17 Chassis)
Dead Set
Check DP21, 39V Zener, in the startup circuit
(Anonymous)
<HR align=left width="100%" SIZE=2>
Sony TV (FE-1 Chassis)
No remote control operation
Check as necessary D203 (MTZJ-5.6B) on main pcb, D907 (MTZJ-9.1A) on pcb H1 or the remote control sensor IC900 (SBX1981-51), part no. 8-742-014-11
(Josh)
<HR align=left width="100%" SIZE=2>
Panasonic TV Model: TX28DK2 (EURO 4 Chassis)
No surround sound
As Mark said in a fault on the Euro 4 chassis, Replace the TDA2030.
On this model there are three TDA2030 s. If you have to replace any also as a matter of course replace the two regulators Q2701 and Q2702 or the chances are the TDA s wont last long
(Anonymous)
<HR align=left width="100%" SIZE=2>
Sony TV (FE-1 Chassis)
No remote control operation
Check as necessary D203 (MTZJ-5.6B) on main pcb, D907 (MTZJ-9.1A) on pcb H1 or the remote control sensor IC900 (SBX1981-51), part no. 8-742-014-11
(Josh)
<HR align=left width="100%" SIZE=2>
Sony TV (FE-1 Chassis)
No sound
This may be remedied by entering TT24 in the service mode, if fault persists Q202 (2SC2412K) could be leaky
(Josh)
<HR align=left width="100%" SIZE=2>
Sony TV (FE-1 Chassis)
Pressing the screen format button displays wide, smart, zoom and 4:3 modes but settings have no effect on picure
Enter TT35 in the service mode to select a 4:3 CRT
(Josh)
<HR align=left width="100%" SIZE=2>
Sony TV (FE-1 Chassis)
Purple line down picture
Replace IC301 (CXA2060AS), part no. 8-752-082-35
(Josh)
<HR align=left width="100%" SIZE=2>
Sony TV-Vid Combi Model: KV-20VM20 (SCC-H16B-A Chassis)
Would not eject the tape
Replace Elevator activator rack (Broken) REF# A34 OEM# 9-908-164-01. - UL# 146T - Set MFG. by Goldstar Similar To: Zenith TVR1920 & KV-13VM20
(Don Hutcheson's tv service center)
<HR align=left width="100%" SIZE=2>
Imerial TV Model: 36M92 (11AK03 Chassis)
Tv stays in stand-by when the power is swiched on. No response from the remote or any button on the set
R603 (3.9Kohm, 5W) was o/c
(Patje - <st1:country-region w:st="on"><st1

lace w:st="on">Belgium</st1

lace></st1:country-region>)
<HR align=left width="100%" SIZE=2>
<st1

lace w:st="on"><st1:City w:st="on">Luxor</st1:City></st1

lace> TV Model: MP63P1 (6362-71 Chassis)
Totaly dead without any signs of life!
Flyback transitor failed (S2000AF)
(Jonnyk)
<HR align=left width="100%" SIZE=2>
Philips TV (A10E Chassis)
F on top righthand of screen then loss of geometery data and int shutdown, unable to restart but when try do so set cuts out
Painter IC failure, A small 100 leg device a joy to change if you have the right gear ! Ref IC7064 also updated software on new IC
(Christv)
<HR align=left width="100%" SIZE=2>
Samsung TV Model: CT566 (K51A Chassis)
No power
Voltage not changing on pin 18 IC901 (SZM-368ET2)
(Anonymous)
<HR align=left width="100%" SIZE=2>
Nokia TV Model: SP71L1
Popping sound from the high voltage then shuts off
Change TDA8350Q and the 22ohm resistor if its burned
(Jonnyk)
<HR align=left width="100%" SIZE=2>
Philips TV Model: 28ST2781 (GR2.2 AA Chassis)
Dead, psu ticking
Flyback cap (11nF, 1600V) was burned which caused the BU508AF flyback transistor to fail. Changed both
(Jonnyk)
<HR align=left width="100%" SIZE=2>
Beko TV Model: 30328T
White line down centre of screen (top to bottom}
Replace C805
(Brian odonnell)
<HR align=left width="100%" SIZE=2>
Telefunken TV (TX92F Chassis)
Dark picture
Replace RL03
(Kostas - <st1:country-region w:st="on"><st1

lace w:st="on">Greece</st1

lace></st1:country-region>)
<HR align=left width="100%" SIZE=2>
Samsung TV Model: CB7230WT
High pitch frequency squeal from transformer
Fix, by replacing the main transformer which costs up to $350 Australian Dollars or doing it the cheaper way covering the capacitors around the Transformer in glue as they cause frequency to run through to the main transformer which make this noise
(Anonymous)
<HR align=left width="100%" SIZE=2>
Nordmende TV Model: SC63SF (ICC9 Chassis)
OSD appears as one big horizontal line with wrong colours and noise (looks like no hor. sync). Teletext is ok
Replace proc. IR01 (ST9293) which contains the OSD functions. (expensive IC)
(Harryd)
<HR align=left width="100%" SIZE=2>
Philips TV Model: 20GR1250/52R (GR1-AX Chassis)
Tv turns on automatically. Power supply works well, +5V present but seems that CPU (7700) does not (no standby mode), no remote or control on the front of the set
After replacing CPU (TMP47C434) and crystal 1770 (4.0MHz) both control worked intermittently. Replacing transistor 7674 (BC548) solved the problem
(Mladen - Visegrad)
<HR align=left width="100%" SIZE=2>
Amstrad Video Model: DD8901 (47014601 Chassis)
Deck stops after a couple of secs
Suspect the reel sensor (Pt no. 250827)
(Anonymous)
<HR align=left width="100%" SIZE=2>
Toshiba TV Model: 2577B
White horizontal line (Frame collapse)
Dry joint on TA8427K, Frame IC
(Anonymous)
<HR align=left width="100%" SIZE=2>
Beko TV (PT92 Chassis)
High voltage for 5 secs. then goes into protection mode
Replace RV38 (2R2) and DD07 (BY228). Check CD22 (470nF) if o/c
(Anonymous)
<HR align=left width="100%" SIZE=2>
Beko TV (PT92 Chassis)
E/W failure
Replace CD22 (470nF) and TV06 (BD680)
(Anonymous)
<HR align=left width="100%" SIZE=2>

عطية حسن محمود · 01:21 PM

Jvc Video Model: HRJ610
Dead
Transistor Q31 in PSU leaky
(K. Tait)
<HR align=left width="100%" SIZE=2>
Panasonic TV Model: TX-32PK3
Reverting to standby at switch on
Replace C454 (22nF surface mounted component). It is also worth examining the line output and power supply areas for poorly soldered joints
(David Roberts)
<HR align=left width="100%" SIZE=2>
<?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com

ffice:smarttags" /><st1

lace w:st="on">Saba</st1

lace> TV Model: 615 (TX92F Chassis)
At startup, synchronisation (vertical as well as horizontal) is very weak, after max. 15 minutes everything is ok. Sometimes there is no picture
First check all capacitors in the power supply. The real problem was spotted in the IF-area, the shielded space near the tuner: replace all capacitors there, especially the 2.2uF/100 volt type. I replaced it with a 3.3uF/100 volt type with excellent results!
(Anonymous)
<HR align=left width="100%" SIZE=2>
Philips TV (GR1AX Chassis)
TV will not start, seems dead
First measure the 100 volt rail, if it is missing, then desolder the field output transformer, then recheck the 100 volt again, if it is now present, replace the transformer : the type = 37622 replacement = fat 30057 (Konig). After that everything was ok!
(Anonymous)
<HR align=left width="100%" SIZE=2>
<st1:City w:st="on"><st1

lace w:st="on">Hitachi</st1

lace></st1:City> TV Model: C28W410SN (A7 Chassis)
The set reverts to standby intermittently
Set HT control had invisible dry joints
(Anonymous)
<HR align=left width="100%" SIZE=2>
Toshiba TV Model: 215R8N
Severe vertical distortion- `egghead` symptoms
Replaced c317 in vertical cct (2.2uf, 50v) substituted 4.7uF. Must be 105ºtype!!
(Anonymous)
<HR align=left width="100%" SIZE=2>
Jrc TV Model: CTV2090 (Nokia Graetz Chassis)
Dead set, line fuse open
Replaced shorted chopper transistor (S2000AF), replaced bulging/defective caps C507 (2.2uF, 160v), C707 (4.7uF 160v), C752 (10uF, 160v) and C759 (100uF, 50v). All with 105 degree types . Plus line fuse (2.5amps)
(Ben)
<HR align=left width="100%" SIZE=2>
Telefunken TV(TX92 Chassis)
Initial rustle of high voltage then nothing, goes to standby, same with remote or front panel controls
R12 burnt out (0.22ohms), replacing this plus the IC01 vertical IC (TDA8177) got set working. NB: also check D01 for shorts
(Ben)
<HR align=left width="100%" SIZE=2>
Toshiba TV Model: 219T9B
Intermittent field collapse after a few hours
Replace field output chip IC303 (AN5515)
(Clive - <st1

lace w:st="on"><st1:PlaceName w:st="on">Swansea</st1:PlaceName> <st1:PlaceType w:st="on">College</st1:PlaceType></st1

lace>)
<HR align=left width="100%" SIZE=2>
<st1:City w:st="on"><st1

lace w:st="on">Hitachi</st1

lace></st1:City> TV Model: C28W410SN
Sound crackles and whistles a short time after switch-on. Gets worse as set warms up
Solder all links and components that have unpainted copper areas around component legs on upper side of main board near to the audio processing I.C. The same applies to the components near the microprocessor
(Anonymous)
<HR align=left width="100%" SIZE=2>
Toshiba TV Model: 145R7B
Dead
D808 s/c due to high HT caused by faulty switch mode ic (STR50020)
(Thunderdunc)
<HR align=left width="100%" SIZE=2>
Philips TV (GR1AX Chassis)
No tuning
Check R3703 for o/c and R3702. Also in CTT-H AA chassis, then R3602
(Hanske)
<HR align=left width="100%" SIZE=2>
Philips TV Model: 37TA1070 (CTT-H AA Chassis)
No tuning voltage on tuner. Goes for: Philips and Magnavox versions. Also the Radiotone TV386VT-SCART which is the same
Resistor 3602 (8Kohm) broken. It is in the 95Volts line providing 33V for tuning circuit. This chassis uses the same processor as the GR1-AX which also might have the same problem. In that case resistor 3702 is to blame
(Hanske)
<HR align=left width="100%" SIZE=2>
Philips TV (CP110 Chassis)
Operating fine (good picture, sound and control) but sometimes sharp sounds coming from the set (not via audio), sounding like the LOPT but more loud, sharp and variable (15 Khz)
The long coil next to the LOPT was resonating/generating sound (not the LOPT itself), solved by cleaning the top and putting a bubble of silicone kit on it, and after temporarily removing the coil from the pcb fixating a ty-wrap strongly around the bottom increasing the magnet-ferrite contact-pressure and stiffness of plastic support construction
(Bartronics)
<HR align=left width="100%" SIZE=2>
Philips TV (L6.2 Chassis)
No sound, no picture and the power supply makes a loud and low tone chirping noise
Replace shorted Capacitor 2912 (2n2, 2kV) on the deflection module. Note that 2912 is hard to find. It should be blue. If it's brown it's bust
(Anonymous)
<HR align=left width="100%" SIZE=2>
Philips TV Model: 27CE4599-33R (2B Chassis)
Smearing out of one or several colors, best seen in txt-mode, my 27CE4599/30R smeared out in red and green, not in blue, fully exchanging the drivers (input and output complete, otherwise the RGB driver will blank the crt) moved the fault to the other color
Replace the 180K feedback resistors in the amplifiers with normal 1/4W metal film instead of 1/8W, they can become open circuited (in mine both green and red were faulty in this way). Change all 3 and not just the defective ones, replace also all the paralleled 75K resistors per color (fe by 47K+27K) to prevent bright color raster (they can also become open circuit)
(Bartronics)
<HR align=left width="100%" SIZE=2>
Panasonic Video Model: NV-HD100
Display dead rest of functions ok
Change transistor Q1701 on Timer operation board
(Anonymous)
<HR align=left width="100%" SIZE=2>
Watson TV Model: FA3629-B (11AK19-E3 Chassis)
No sound
R829 (4.7 ohm) o/c
(Anonymous)
<HR align=left width="100%" SIZE=2>
Fidelity TV Model: CTV3221
Dead
Check all high value resistors in primary of the p.s.u. If the fuse is blown, expect to replace I1, Q1 and R1 as well, Probably best to do all three and check the rectifier diodes
(Anonymous)
<HR align=left width="100%" SIZE=2>
Sony TV Model: KV2032
Keeps changing channel
Check voltage on D12 if below 4.8V then change
(Anonymous)
<HR align=left width="100%" SIZE=2>
Philips TV Model: 27CE4599-33R (2B Chassis)
Red raster and red flyback lines
One of the paralelled 75 kohm resistors of red was open, replaced with 47K in series with 27K and fault gone (fault seeking in RGB output difficult due to intelligent auto calibrating-cutoff driver with picture mute TDA4580)
(Bartronics)
<HR align=left width="100%" SIZE=2>
Panasonic TV (Z8 Chassis)
Procedure to enter the service menu
Set tv on channel 99 position, lower sharpness to minimum setting, press mute on the handset while at the same time pressing V on the front of the tv, navigate through the menu using the channel up/down buttons, alter values using the volume +/- buttons
(Josh)
<HR align=left width="100%" SIZE=2>
Samsung Video Model: SV-2303 (SV633 Chassis)
Intermittent functions
Check for dry joints on mode switch and clean off any grease inside the switch
(Vincenzo)
<HR align=left width="100%" SIZE=2>
Telefunken TV (TX92F Chassis)
Keeps on burning the surge resistor 280ohm 5W in series with the chopper transformer
Replace the chopper transfomer it has a short either on the primary or secondary side
(Prince)
<HR align=left width="100%" SIZE=2>
Philips TV Model: 29PT785C (G88 Chassis)
The set goes into protection and tries to restart. The tube shows no horizontal lines
After disconnecting the horizontal plug the +148V and CRT high voltage remained stable. The small pcb on the tube (scan coils with 5 or 6 pins) was dry jointed at copperside
(Anonymous)
<HR align=left width="100%" SIZE=2>
Sharp TV Model: DV3760H
Will not work, standby (red) LED flashing
C604 in the 12V line is bad
(Tomislav)
<HR align=left width="100%" SIZE=2>
Philips TV (L6.1AA Chassis)
Sound goes off and no remote control functions when heated
T7505 in +5V supply, replace 482213041344
(Anonymous)
<HR align=left width="100%" SIZE=2>
Thomson TV Model: 28WS23E (ICC17 Chassis)
At switch on set starts-up with lots of sparks inside CRT socket, then switches to standby
Replace FBT - HR 8317. There is a repair kit available from Thompson for this chassis, which includes a new loptx, tuning caps and a couple of coils. There are also some surface mount resistor value changes. It's Pt. no: 35175720
(Andy Doswell)
<HR align=left width="100%" SIZE=2>
Panasonic TV Model: TX33AK10 (EURO 5 Chassis)
Strange picture / bleary / movement blurr etc etc
This problem was caused by eeprom corruption, once the eeprom was reset the fault was cured (note that after a reset reinstallation i.e. tuning will be required)
(Josh)
<HR align=left width="100%" SIZE=2>

عطية حسن محمود · 01:22 PM

Thomson TV (TX807 Chassis)
EHT at switch on then goes dead
Frame i.c. s/c (TDA8177)
(Bob.g)
<HR align=left width="100%" SIZE=2>
Orion TV Model: 5190DK
No secondary supplies
Check / replace C418 (100uF, 25v), C489 (100uF, 40v), C425 (1uF, 400v), posistor PTC401, R422 (5.6ohms, 1w) and the chopper transformer
(Anonymous)
<HR align=left width="100%" SIZE=2>
Goldstar TV-Vid Combi Model: KY14V30
Squeeking sound from chopper transformer
Shorted voltage regulator, zener diode or h-out
(Rodgestar)
<HR align=left width="100%" SIZE=2>
Samsung TV Model: TXB1940
Red led blinks on / off, TV does not turn via power button and/or remote but after 20 minutes or so it turns on and works fine
Replace R902, R901, R905, R903, R900A, Q902, and possibly the two (one small and one large) capacitors in the section labeled as the power supply. The board will be black under the components that are bad. Q902 is an NPN transistor and is hard to find.
(Eliot)
<HR align=left width="100%" SIZE=2>
Sony TV Model: KV28WS2U
OSD volume bar present continuously. No functions available
Front panel tactile switches leaky. Replace same
(Pete Sadecki)
<HR align=left width="100%" SIZE=2>
Decca TV Model: D14TT92
Dead set, with 300v across smoothing (takes a very long time to discharge, watch out!)
Check RP06 (3.9M ohm) for O/C, the one I had had nothing else gone
(Anonymous)
<HR align=left width="100%" SIZE=2>
Firstline TV Model: 1433GR
No picture, no OSD
Zener diode D219 (12V) shorted. Check capacitors C608, C606, C617, C619, C411 and resistor R256 (39 ohm, 1W). Unreg. voltage to R256 should be 16-17V with no change when warm
(Jeroni Paul)
<HR align=left width="100%" SIZE=2>
Philips TV Model: 28ML8805-16B (FL1.6AA Chassis)
Dead
Fuse open (3.15A), transistor 7216 (ON4827 = BUT12AF) shorted and solder joint of SMD resistor 3305 (11K) cracked (located on PS control board)
(Jeroni Paul)
<HR align=left width="100%" SIZE=2>
Philips TV Model: 28ML8805-16B (FL1.6AA Chassis)
Some front panel indicators are dark
LEDs are tired
(Jeroni Paul)
<HR align=left width="100%" SIZE=2>
Philips TV Model: 28ML8805-16B (FL1.6AA Chassis)
Clips picture at bottom when warm
Vertical deflection IC defective 7450 (TDA3654Q)
(Jeroni Paul)
<HR align=left width="100%" SIZE=2>
Rediffusion TV (Mk 4 Chassis)
Intermittent loss of lower frequency channels ie Ch:36, higher channels ok
Dry joints in UHF tuner, resolder the PCB to casing earth connections inside tuner
(Anonymous)
<HR align=left width="100%" SIZE=2>
Rediffusion TV (Mk 4 Chassis)
No sound or picture (MK4A) with channel display showing "E2"
Check for dry joints or broken print around SMPS transformer connections
(Anonymous)
<HR align=left width="100%" SIZE=2>
Toshiba TV Model: 210T6BZ
Distorted sound / banging
Voltage at C832 over 25V! Replace Q809, C866, C869, C864 and resolder dry joints in PSU
(Paul Willis tv & video repairs)
<HR align=left width="100%" SIZE=2>
Mitsubishi TV Model: BD28S (11AK19 Chassis)
Narrow E/W Pic
C630 o/c
(Anonymous)
<HR align=left width="100%" SIZE=2>
Finlandia TV Model: C/D 66KZ6/F
No power mains fuse intact
Check Replace C706 10uF 350v Cap In Psu (o/c) also check / replace T511 S2000AF H.out Transistor
(Clive - <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com

ffice:smarttags" /><st1:City w:st="on"><st1

lace w:st="on">Swansea</st1

lace></st1:City> college)
<HR align=left width="100%" SIZE=2>
Panasonic Video Model: NVFS90EG
Power supply problem, high frequency sound only !
Check / replace C9 (1uF, 400V)
(K. bombeeck)
<HR align=left width="100%" SIZE=2>
Grundig Video Model: VS920
No remote control operation or modulator output
Unlock the video with code 4934 + OK. Check if you have the remote control set on video 1. When you have the RP 95 remote you can set the remote to video 1 with code 8527 + OK
(Anonymous)
<HR align=left width="100%" SIZE=2>
Panasonic Video Model: NVHD660B (K DECK Chassis)
When inserting tape, tape goes in, get a motor whirring noise, and tape ejects again with an "F02" or "F04" error. Closer examination shows that tape seating correctly, but tape not being fed out to the head
Cause was the motor powering the main mechanical feed/load and eject gear, underside of main front right of central chasis. Small plastic part on motor spindle under gear had split, so slipping. Secured part and gear to spindle with super glue! OK now!
(Ian Harrison)
<HR align=left width="100%" SIZE=2>
Bush TV (11AK19 Chassis)
Slightly excessive width and no 4:3 reduction
The BUK444 had shorted but the main fault was L604
(Gordon)
<HR align=left width="100%" SIZE=2>
Panasonic Video (K DECK Chassis)
No eject, code `F06`
Check the condition of the load motor pulley. In my case the sleeve on the motorshaft was cracked. fixed it by roughning the shaft with emery paper, degreasing the sleeve and securing it to the shaft with superglue. Keep glue away from bearing: eureka!
(Pete Thomas )
<HR align=left width="100%" SIZE=2>
Hitachi TV Model: C2886TN
Procedure to enter the service mode
Press & hold the menu key (the installation line should now appear), with the install menu displayed press both the volume up and down buttons for about 8 seconds until the service option is available then follow the on screen directions
(Josh)
<HR align=left width="100%" SIZE=2>
Samsung TV Model: W124W6VN
Picture darkens and lightens continually
This was due to a faulty first anode potentiometer, as its part of the l.o.p transformer a new l.o.p.t had to be fitted
(J)
<HR align=left width="100%" SIZE=2>
Panasonic TV Model: 14B3T (Z375 Chassis)
Excessive vertical overscan caused by a poor factory set up
Enter service mode and alter V Size:-
Select channel 70. Set Sharpness to min. Press the Off Timer button on the remote and at the same time press the DOWN button on the set front panel. UP/DOWN steps thru' menus; +/- alters values; STR stores changes
(Steve Larkins)
<HR align=left width="100%" SIZE=2>
Schneider TV Model: STV2802
Procedure to access service mode
Press RED and BLUE keys simultaneously on remote conrol, within 5 secs press P- and V+ on tv
(A. Young)
<HR align=left width="100%" SIZE=2>
<st1

lace w:st="on"><st1:City w:st="on">Hitachi</st1:City></st1

lace> TV Model: C2846TN / C2546TN
Field collapse (horizontal white line on screen)
R710 dry joints. Same as C2146TN & C2546TN problem solved with thanks to Mike G & Barty. Power off/unplug. Get to circuit board underside with aerial socket up-R710 is near top and right of centre-cluster of 4 joints best resoldered
(Andy)
<HR align=left width="100%" SIZE=2>
<st1:City w:st="on"><st1

lace w:st="on">Hitachi</st1

lace></st1:City> TV Model: C2846TN
Intermittent partial collapse of picture vertically (picture squashes down temporarily)
See Field collapse tip - it will happen so anticipate it and correct at you leisure rather than have the TV fail completely in the middle of you favourite show
(Andy)
<HR align=left width="100%" SIZE=2>
<st1

lace w:st="on"><st1:City w:st="on">Hitachi</st1:City></st1

lace> TV Model: C32W511TN (A7 Chassis)
Intermitently goes to standby
Check R959 (as described by Mark C24W511TN) and found no problem there, however I discovered that several connections in the area of R959 had fractured. They appear to be components near/attached to a heat sink. Re-soldering the joins did the trick
(J adjare)
<HR align=left width="100%" SIZE=2>
Philips TV Model: 28PW8504-12 (MG2.1E Chassis)
Tv seems to be working, but there is no pictue, OSD is present.
TDA9330 is defective
(Flipmode)
<HR align=left width="100%" SIZE=2>
Philips TV-Vid Combi Model: 21PV688/05/39 (Evolution AA Chassis)
Dead, Mains fuse blasted
D6313 (1N5062) s/c, also capacitor C2328 (470pF, 1Kv) s/c
(Tim)
<HR align=left width="100%" SIZE=2>
Sony TV (AE2 Chassis)
Sound low & distorted when hot
Check -22v & +22v on plug PL505, if either incorrect check R627 27~ (goes high in value)
(Ken Porter)
<HR align=left width="100%" SIZE=2>
Sharp Video Model: VCA111
Poor picture
Faulty C329 (4.7uF)
(Vlado - <st1:country-region w:st="on"><st1

lace w:st="on">Macedonia</st1

lace></st1:country-region>)
<HR align=left width="100%" SIZE=2>
Philips TV (2BS Chassis)
No E-W Correction
Replace TR7467
(Vlado - <st1:country-region w:st="on"><st1

lace w:st="on">Macedonia</st1

lace></st1:country-region>)
<HR align=left width="100%" SIZE=2>
Sharp TV Model: (21B Chassis)
No UHF Band
Check Q212
(Vlado - <st1:country-region w:st="on"><st1

lace w:st="on">Macedonia</st1

lace></st1:country-region>)
<HR align=left width="100%" SIZE=2>
Goldstar TV (PC12A Chassis)
Dead
Replace D401
(Vlado - <st1:country-region w:st="on"><st1

lace w:st="on">Macedonia</st1

lace></st1:country-region>)
<HR align=left width="100%" SIZE=2>
Goodmans TV Model: GTV69WZDT
Set dead
Replace switch mode i.c IC106 (MC44608P40
(Fairfield Televisions)
<HR align=left width="100%" SIZE=2>
Samsung TV-Vid Combi Model: TVP-3350IS (SCV11C Chassis)
No RF audio - ok on VCR tape playback and via SCART input
Hairline cracks in PCB tracks on motherboard directly at the back of the tuner
(Anonymous)
<HR align=left width="100%" SIZE=2>
Samsung TV-Vid Combi Model: TVP-3350IS (SVC11C Chassis)
Set stuck in standby mode
Check for failure of Q801 (STRS6707)
(Anonymous)
<HR align=left width="100%" SIZE=2>
Vestel TV Model: (11AK30 Chassis)
Stuck in stand-by
X501 4MHz Xtal
(Anonymous)
<HR align=left width="100%" SIZE=2>
<st1:City w:st="on"><st1

lace w:st="on">Hitachi</st1

lace></st1:City> TV Model: C2867TN
The set was going off intermittently
Resoldering all three pins on regulator IC952 cured the problem
(Anonymous)
<HR align=left width="100%" SIZE=2>
Matsui TV Model: TVR180
No sound on TV, ok in play and on recordings
Change address data 0D from 00 TO B3. This worked for me as well - removed chip and changed location 10D as above (I guess there may be a way to do it without tearing unit apart but didn't have any manuals!)
(Anonymous)
<HR align=left width="100%" SIZE=2>
Beko TV Model: 12220T
Dead psu
C110 defective in psu (47uF, 25V) - Resevoir cap for ic
(Anonymous)
<HR align=left width="100%" SIZE=2>
Bush TV Model: 2866NTX/SM2
Intermittently the stereo symbol would appear on screen, sometimes it would change to dual II and back again, while this was happening the sound would crackle and sometimes disappeared all together
The problem was cured by re-soldering over the whole NICAM panel. Note: The Bush 2866NTX without the SM2 in the model is a different chassis
(Sparky)
<HR align=left width="100%" SIZE=2>
Hitachi TV Model: C2519T (G8Q Chassis)
This set was dead apart from a hissing sound from the speaker, no standby led
5 volt regulator on front panel had 13 volt input but only 1 volt output, Replacement cured the fault
(Brian odonnell)
<HR align=left width="100%" SIZE=2>
Panasonic Monitor Model: E110 (NA Chassis)
Image and text are to large on screen
Replaced flyback
(Sjf)
<HR align=left width="100%" SIZE=2>
Panasonic TV Model: TX32PF10 (EURO 4 Chassis)
Over a short period of time the convergence of the picture gets steadily worse. Eventually it is so bad that even the teletext shows double or triple images when they are made up of a combination of colours. Pure colours: Red, Green or Blue are OK.
The Tube must be replaced. Apparantly this is a known problem to Panasonic, especially on 32" tubes. It has been known to happen both in and out of warranty. So far Panasonic when contacted have also paid for repairs when out of warranty (2 years old)
(Anonymous)
<HR align=left width="100%" SIZE=2>
Sony TV Model: KV27EXR25
No power, no raster, relay comes on
Found horizontal trans short
(Anonymous)
<HR align=left width="100%" SIZE=2>

عطية حسن محمود · 01:24 PM

Panasonic TV Model: TC-21 S3R (Z7 Chassis)
Picture fades away few seconds after start-up till no picture. Sometimes no picture at all. Sometimes picture OK for longer. Sound unaffected.
Faulty joints on CRT pcb. Cracked solder joints at tube socket connections on CRT circuit board. Caused variable supply to CRT heaters. Resolder all socket pins to pcb.
(<?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com

ffice:smarttags" /><st1:State w:st="on"><st1

lace w:st="on">Col</st1

lace></st1:State>)
<HR align=left width="100%" SIZE=2>
Panasonic TV (EURO 4 Chassis)
Int going into standby
Replace C454 a 22nF smd, located near the Frame o/p ic.
(Paul Bradshaw)
<HR align=left width="100%" SIZE=2>
Philips TV Model: 28DC2670/21R (D16 Chassis)
HOT is s/c, after replacement tv functions are erratic, snow on screen / goes into standby / black screen
Change the VCU 2136 (It is possible to replace with a VCU 2133)
(Daniel)
<HR align=left width="100%" SIZE=2>
Vestel TV (11AK19P3 Chassis)
Intermittent no or variable luminance similar to beam limiting fault
The 11AK19P3 chassis is used mainly in Black Diamond sets. These have a sub panel next to the video processor. The fault is caused by IC100 a TDA9181P which is difficult to obtain most parts companies require a special order. Had this fault 3 times
(Jg <st1:country-region w:st="on"><st1

lace w:st="on">scotland</st1

lace></st1:country-region>)
<HR align=left width="100%" SIZE=2>
Toshiba TV Model: 2550TB
Set stuck in standby at switch on
Field output ic TA8427K faulty, also change 220uf cap
(<st1:City w:st="on"><st1

lace w:st="on">Fairfield</st1

lace></st1:City> televisions)
<HR align=left width="100%" SIZE=2>
Sanyo Video Model: VHR766
Completely dead, no display
Reg IC511 faulty (L5431). Replaced solved all problems
(Stuart - SOS tv & video repairs)
<HR align=left width="100%" SIZE=2>
Nordmende TV Model: Futura 72 IMC (F17 Chassis)
Field reduced at the bottom of the screen with about one inch of undefined lines instead of a picture
Oscilloscope checks at the rail supply U5 showed a high ripple content, replacement of the smoothing capacitor CL52 (1000uF, 40V) cured the trouble
(Angovisao)
<HR align=left width="100%" SIZE=2>
Various Video Model: Various
No capstan rotation / flatpack motors
Had this a lot, electrolytic cap on pcb leaks, replace cap but clean off area and check for o/c print eaten away by electrolyte from the little devil ...
(Kevin j.)
<HR align=left width="100%" SIZE=2>
Mitsubishi TV Model: CT29B2STX
<st1

lace w:st="on"><st1:City w:st="on">Severe</st1:City> <st1:State w:st="on">NS</st1:State></st1

lace> bowing
Check for leakage of the small electrolytic capacitors on the vertical correction pcb at the right of the main pcb, check C4014 in particular and if found to be faulty also check transistor Q4009 (2SA950) which may also have been damaged
(Josh)
<HR align=left width="100%" SIZE=2>
Rca TV (CTC177AF3 Chassis)
Overloaded picture, AGC not adjustable
Found IC7301 (CXA1594) bad. Replace ic and align tuner parameters
(Anonymous)
<HR align=left width="100%" SIZE=2>
<st1:City w:st="on"><st1

lace w:st="on">Hitachi</st1

lace></st1:City> TV Model: C32WD2TN2 (A7 Chassis)
Volume goes to maximum when volume plus or minus selected
Replace R039 (10k) pull up resistor for micro switches, gone slightly low value
(Karl)
<HR align=left width="100%" SIZE=2>
Sony TV Model: KV-X2183E (BE3B Chassis)
Not working, Stand-by indicator led flashing 6 times, Power supply ok
The tuner has loose connections, especially the ground points and the two SMD Ic´s
(Rui Loureiro - <st1:country-region w:st="on"><st1

lace w:st="on">Portugal</st1

lace></st1:country-region>)
<HR align=left width="100%" SIZE=2>
Goldstar TV Model: CIT2180
Frame foldover, line across middle of screen
C301 (47uF, 160v)
(Ian mills)
<HR align=left width="100%" SIZE=2>
Teac TV Model: CTM203 (PC04A Chassis)
No Power
Check / Replace power switch, it read zero ohms at contacts - however carbon build-up stops p.s.u. from starting
(B-1)
<HR align=left width="100%" SIZE=2>
<st1

lace w:st="on"><st1:City w:st="on">Hitachi</st1:City></st1

lace> TV Model: CPT1446R (NP84CQ Chassis)
H.T fluctuations, picture becomes half white and half black. H.T varies from about 80V to 110V
Replace ZD902. It's a 10V zener diode
(Sparky)
<HR align=left width="100%" SIZE=2>
Philips TV Model: 25PT452A/11 (GR2.2 Chassis)
Picture wide and triping
Change D6591 s/c (1N4148)
(Manuel)
<HR align=left width="100%" SIZE=2>
Vestel TV (11AK18 Chassis)
Procedure to enter service mode
Go to main menu,then enter 1675
(Manuel)
<HR align=left width="100%" SIZE=2>
Thomson TV (ICC20 Chassis)
Set tries to start three times, HV comes up for a short moment. After this LED is blinking first four times, then seven times
Change vertical chip TDA8177F and the four diodes in front of it
(Kalle - <st1:country-region w:st="on"><st1

lace w:st="on">Sweden</st1

lace></st1:country-region>)
<HR align=left width="100%" SIZE=2>
Toshiba Video Model: V880MS
Dead
Check C822, Z801, Z802 (CPN10)
(Vlado - <st1:country-region w:st="on"><st1

lace w:st="on">Macedonia</st1

lace></st1:country-region>)
<HR align=left width="100%" SIZE=2>
Daewoo TV (CP785 Chassis)
No picture
Replace IC (TDA8385J)
(Vlado - <st1:country-region w:st="on"><st1

lace w:st="on">Macedonia</st1

lace></st1:country-region>)
<HR align=left width="100%" SIZE=2>
Sharp TV (5BSA Chassis)
Small picture
Replace D716 (27V) and D717 (75V)
(Vlado - <st1:country-region w:st="on"><st1

lace w:st="on">Macedonia</st1

lace></st1:country-region>)
<HR align=left width="100%" SIZE=2>
Thomson TV Model: 28WS23E (ICC17 Chassis)
Set trips off int. Set tries to come on then goes back to standby
Dry joints on line o/p transformer
(Ockbrook tv and video)
<HR align=left width="100%" SIZE=2>
<st1

lace w:st="on">Saba</st1

lace> TV (ICC8 Chassis)
Poor picture (colors flashing) looks like one colour missing
Change RT44 (39K) beside the video amplifier
(Anonymous)
<HR align=left width="100%" SIZE=2>
Rca TV Model: F35670MB (CTC187CN3 Chassis)
Common problem bulletin:
Resolder ALL ground connections in and around, and under the tuner shields, solves most problems, prevents big problems as in dead EEPROM or CPU
(Anonymous)
<HR align=left width="100%" SIZE=2>
Rca TV Model: F35670MB (CTC187CN3 Chassis)
Dead. F4001 (5 amp) fuse open
Check U4101 (STK730-150) Part no. 223948, Check CR4106 for short, Check Q4401 for short, replace all shorted or open parts, Check the two main filter caps on the secondary off of SMPS, replace vented caps, Replace 10uf 200v cap off of reg.
(Anonymous)
<HR align=left width="100%" SIZE=2>
Goldstar TV Model: (MC41 Chassis)
No power
Replace Q805 (2SC3852A)
(Vlado - <st1:country-region w:st="on"><st1

lace w:st="on">Macedonia</st1

lace></st1:country-region>)
<HR align=left width="100%" SIZE=2>
Lg TV Model: CZ-20E60 (11.1 Chassis)
Stuck in standby with no line drive
R410 o/c
(Anonymous)
<HR align=left width="100%" SIZE=2>
Grundig TV (CUC5350 Chassis)
Goes to standby after a short time
Replace C631 (1uF, 63v)
(Anonymous)
<HR align=left width="100%" SIZE=2>
Sanyo Video Model: VHR287E
Cuts out on record and clock blinks out other wise OK
Replace PR512 JS130 (Light brown 1000 on side near front of PSU next to Q5103
(Allan)
<HR align=left width="100%" SIZE=2>
<st1:City w:st="on"><st1

lace w:st="on">Ferguson</st1

lace></st1:City> TV Model: T49F (TX91 Chassis)
Sound at maximum and unadjustable
Check / replace surface mounted transistor TV02 (BC858) on the print side of the pcb
(Josh)
<HR align=left width="100%" SIZE=2>
Philips TV-Vid Combi Model: 14PV505/07
Dead set, no red standby light on the front panel
Check D639, on the secondary of the chopper transformer, it supplies the 8Volt line, and goes s/c. Fuses remain in tact
(R. Higton.)
<HR align=left width="100%" SIZE=2>
Samsung TV Model: CB5012Z (P58SC Chassis)
Stuck in SECAM mode
Change resistor R514 (100K)
(G. Camilleri)
<HR align=left width="100%" SIZE=2>

عطية حسن محمود · 01:25 PM

Goldstar Video Model: T163I
No power
Check +6v rail in PSU. If low replace capacitor CP19 (1000uF, 10v)
(Rich)
<HR align=left width="100%" SIZE=2>
Philips Video Model: VR722 (VR722/02/05/08/13)
Dead after power short loss
Drained capacitor C2114 (47

F,16 Volt) Philips part number 4822 124 80231
(Bj)
<HR align=left width="100%" SIZE=2>
<?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com

ffice:smarttags" /><st1

lace w:st="on"><?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com

Ferguson</st1:City></st1

lace> TV (TX92F chassis)
Set tripping with led flashing on / off
Most likely to be RL08 a 10K smd resistor connected to pin 8 of the LOPT. In every case i know of the LOPT also needed replacement (HR7360)
(John)
<HR align=left width="100%" SIZE=2>
Bush TV (11AK19 Chassis)
Power supply tripping in both on and standby modes
C829 (47uF, 160v) HT smoothing cap
(Malcolm French)
<HR align=left width="100%" SIZE=2>
Sanyo TV Model: AVM1902 (G4S-19020 Chassis)
Intermittent horizontal deflection
Resoldered the pins of horizontal deflection transformer
(Anonymous)
<HR align=left width="100%" SIZE=2>
Bush TV Model: 1433 (Vestel 11AK20SE-2 Chassis)
Dead
Check / replace R809 (0.47ohms). Could be the first indication of the chopper transforme going faulty
(Anonymous)
<HR align=left width="100%" SIZE=2>
Panasonic TV Model: TX25W1E
Screen turns white intermittently
Bloqueo de la fuente se va el diodo R2KL
(Anonymous)
<HR align=left width="100%" SIZE=2>
Bush TV Model: 2014 (11AK19 Chassis)
Power supply tripping in both on and standby modes
C829 (47uF, 160v) HT smoothing cap
(Malcolm French)
<HR align=left width="100%" SIZE=2>
Orion Video Model: VP-290RC
Drum running too fast
The OEC9011 chip may be faulty and the pcb beneath it may be charred (expensive chip!)
(Anonymous)
<HR align=left width="100%" SIZE=2>
Sharp TV Model: 21HS-50H (GA-1E Chassis)
Trips 1 second after switch on
R613 o/c (located near scart socket)
(Sean)
<HR align=left width="100%" SIZE=2>
Grundig TV Model: M82-795 (CUC7880 Chassis)
Dead, 800mA fuse blown
Check for dry joints on the chopper transformer also check D663, D664, D666, C653 (4.7nF) and C667 (2.2uF)
(Anonymous)
<HR align=left width="100%" SIZE=2>
Sony TV (FE-1 Chassis)
After about 30 minutes the set goes to standby, the LED flashes and TV starts again. After 1 Minute the TV Displays : Antenna connection failed!
Change IC101 of IF on A-Board. Order Nr. 875946647
(Daniele Marseglia)
<HR align=left width="100%" SIZE=2>
Matsui TV Model: 25M2 (Sanyo? Chassis)
Set dead, no PSU output. 320V supply ok
Replace start up resistors R620/R624 both 120K. Then set worked ok
(A. Gould)
<HR align=left width="100%" SIZE=2>
Alba TV Model: CTV4859 (AK19 Chassis)
When switched on from standby, green light flashes, no EHT
D605 (BA157)
(Shanks)
<HR align=left width="100%" SIZE=2>
Toshiba TV Model: 2857DB
Int. frame collapse
Dry joints on regulator Q420, not too easy to find as it is not close to power supply or frame stage, it is the supply to the frame generetor IC
(Shanks)
<HR align=left width="100%" SIZE=2>
Samsung TV Model: CB5012Z (P58SC Chassis)
No colour, stuck on secam only
Check R514 (100K) open circuit or very high value
(Godwin Camilleri - <st1:country-region w:st="on"><st1

lace w:st="on">Malta</st1

lace></st1:country-region>)
<HR align=left width="100%" SIZE=2>
Vestel TV Model: 3710 (11AK20 Chassis)
Switches to standby when hot
Check / replace C601 (100nF) and C605 (3.3uF)
(Anonymous)
<HR align=left width="100%" SIZE=2>
Panasonic TV Model: TX28PK2
Internal 3.15A mains fuse blown with no obvious cause
The official Panasonic modification is to uprate the mains fuse from 3.15A to 5A
(Josh)
<HR align=left width="100%" SIZE=2>
Panasonic TV Model: TX33AK10 (EURO 5 Chassis)
Procedure to reset eeprom
Press volume minus (-) on the set while also pressing the remote controls status button (this button has a + sign by it and is located above the red text button), this should now have initiated the reset routine and displayed data should be seen
(Josh)
<HR align=left width="100%" SIZE=2>
Jvc Video Model: HRJ265
Capstan motor intermittantly stopping and starting
Replaced motor
(Alternative electrics)
<HR align=left width="100%" SIZE=2>

عطية حسن محمود · 01:27 PM

Matsui TV Model: 2109NS / 2107NS Mk2
Standby LED blinks off when Standby pressed on remote control. Supplies do not come up and set does not run.
Value of R256 (4K7 SMT) is marginal to turn Q504 on fast enough for micro to see supplies come up. Replaced R256 with 1K (0805 SMT) problem solved
(Kevin - <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com

ffice:smarttags" /><st1:City w:st="on"><st1

lace w:st="on">Plymouth</st1

lace></st1:City>)
<HR align=left width="100%" SIZE=2>
Toshiba TV Model: CF2666R (TAC9102 Chassis)
Screen is too tall, with vary faint retrace lines showing
Found that Capacitor C305 (50V, 2.2uF) was dry, C342 (50V, 1uF) was also dry too. Capacitors are near vertical IC 301
(Mario)
<HR align=left width="100%" SIZE=2>
Vestel TV (11AK19 Chassis)
Bright picture with retrace lines
Resolder pin 4 and 5 on memory IC502. If the set now starts, change memory
(<st1

lace w:st="on"><st1:City w:st="on">Kalle Birgersson</st1:City>, <st1:country-region w:st="on">Sweden</st1:country-region></st1

lace>)
<HR align=left width="100%" SIZE=2>
Rca TV Model: VJM2022T (CTC 121D Chassis)
Will not shut off
SCR 100 leaky
(Anonymous)
<HR align=left width="100%" SIZE=2>
Sony TV Model: KVA2942U
LED A flashes once, LED B flashes 13 times.
Bad solder joints on field IC1501 on back edge of main PCB
(Kevin - <st1:City w:st="on"><st1

lace w:st="on">Plymouth</st1

lace></st1:City>)
<HR align=left width="100%" SIZE=2>
Sharp Video Model: VARIOUS
El mecanismo de transporte de la cinta pierde velocidad.
Rodillo del cabrestante or banda <st1:State w:st="on">del</st1:State> cabrestante
(<st1:City w:st="on"><st1

lace w:st="on">Santos</st1

lace></st1:City>)
<HR align=left width="100%" SIZE=2>
Magnavox TV Model: T979
No picture or sound, trips breaker
Capacitor C16 (0.1uF)
(Santos Trejo)
<HR align=left width="100%" SIZE=2>
Magnavox TV Model: T946
Loses vertical and horizontal sync
Transistor Q8 shorted
(Santos Trejo)
<HR align=left width="100%" SIZE=2>
Seleco TV Model: 33SS570 (PC040 Chassis)
TV stops working after 60-90 minutes
Check for poor joints in the power supply also change the (1uF, 160V) and the (100uF, 63v) capacitors (2 off)
(Anonymous)
<HR align=left width="100%" SIZE=2>
Panasonic TV Model: 14B3T (Z375. Chassis)
At switch on the set pulsates 6 times before the H.T settles at 110V and the set powers on
Replace R804 (0.56 ohms). It's located in the primary of the power supply and is used for current sensing. Also note this is actually a Daewoo CP375S chassis
(Sparky)
<HR align=left width="100%" SIZE=2>
Jvc TV Model: C14ET1EK (ONWA Chassis)
Picture height is reduced to 2 inches
Replace C418. It's the coupling capacitor from the frame circuit to the scanning coils. It's value is 1000uF, 25V
(Sparky)
<HR align=left width="100%" SIZE=2>
Toshiba TV Model: 2863DB (C6SR Chassis)
To remove protection to assist fault finding
Remove D471. It's a thyristor and is located next to the chopper transformer secondary side
(Sparky)
<HR align=left width="100%" SIZE=2>
Panasonic TV Model: TX24DX1 (EURO 4 Chassis)
Intermittent dead with red standby light on, but won't switch back on, comes back on it's own, won't respond to remote or local controls
Low 5v standby supply due to diode D869 faulty, check by replacement
<HR align=left width="100%" SIZE=2>
Matsui TV Model: 14V1R
Dead, fuse blown (blackened)
Replace IC6380 (UC3842AN) and T665 (MJF18004)
(Anonymous)
<HR align=left width="100%" SIZE=2>
Rca Video Model: Various
After presing play picture appears but looks like in pause mode
Clean and lubricate the capstan flywheel
(Santos Trejo)
<HR align=left width="100%" SIZE=2>
Jvc TV Model: AV-S250EKT
Set dead. Faint whistling noise on switch on. No standby LED
Replaced STR1006, no dfference. Line O/P Transistor OK. 36 Volt Zener, D614 found to be short. This zener is on the secondary of Xformer, T601. This short causes the 12 V start up supply cct, which includes STR1006 not to come on
(Ram)
<HR align=left width="100%" SIZE=2>
Sharp TV Model: 51DT-25H
TV does not turn on, no standby light
R704 was o/c
(Lee B)
<HR align=left width="100%" SIZE=2>
Matsui TV-Vid Combi Model: 185
When blocked out from TV by pin code being incorrectly entered
If you ring up Dixons/Currys they will tell you to bring it in where it will have to be reset, requiring you to pay a charge of £15+
Leave overnight or for 12+ hours and it will after a time delay unlock. I wonder why they don't tell you this - moneygrabbing f******!!!
(Thomas Swift)
<HR align=left width="100%" SIZE=2>
Philips TV Model: 51TB1222 (L6.1 Chassis)
Sifflement de l alimentation usustem a9 v au lieu de 100v
C2423 (102k,1kv capa bleue) et tht
(Anonymous)
<HR align=left width="100%" SIZE=2>
Philips TV Model: 28PW6322-05 (MD1.2E AA Chassis)
No picture and no sound and when switching on, the high voltage transformer makes a sound
The capacitor in pos. 2420 was bad (it produced smoke after some time)
(Kjell)

عطية حسن محمود · 01:30 PM

Mitsubishi TV Model: BD28WS (11AK19 Chassis)
At switch on front l.e.d turns green, blinks 3 times then set returns to standby. All h.t voltages rise, then fall away as set goes into standby
Dry joints IC807
(Lance)

<HR align=left width="100%" SIZE=2>
Grundig TV Model: T55-731 (CUC7303 / FET TYPE Chassis)
Dead bridge and chopper transistor s/c
If no D663 fitted this is version 2 has fet and UC3843. Failure of p.s components caused by C669 dry jointed. Check/change FET (BUZ90), D667 (BA157), R661 (4.7k) (not 220r version 1), R666 and R667 (56r 1w), R663 (10r) and the UC3843. All values for 20"
(Andy Leak)

<HR align=left width="100%" SIZE=2>
ffice:smarttags" /><ST1

lace w:st="on"><?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com

Ferguson</st1:City></ST1

lace> TV (ICC8 Chassis)
Line transistor TL19 was short circuit. After replacement the transistor shorts again
Change capacitor CL21
(Anonymous)

<HR align=left width="100%" SIZE=2>
Sharp TV Model: Unknown
Fault like soft crt
I had 3 of these sets which all looked like soft crt, i changed the crt base from a known good set and all was ok i do not know the fault on the crt base yet but it was as good as new
(John)

<HR align=left width="100%" SIZE=2>
Sharp TV Model: DV5131H (S3B Chassis)
Intermittent failure of Q603
Replace C601 (low in value)
(Anonymous)

<HR align=left width="100%" SIZE=2>
Sharp TV Model: 66FW53H (FW Chassis)
Dead only neon lit
Check D735 across 150v rail, if s/c you will need to replace the opto and the D735. Check Q601 line o/p transistor as this may also be leaky
(Anonymous)

<HR align=left width="100%" SIZE=2>
Sony TV Model: KX27PSI
Almost totally dead. No video or audio whatsoever. Only the clicking sound of two power relays when the set is turned on, and conversely at power down. The green/red lights on the front panel do appear. Repeated failure every 2-3 years. Why ?
An insight into what TV engineers did, after speaking to Sony <ST1

lace w:st="on"><st1:country-region w:st="on">UK</st1:country-region></ST1

lace>: (a) 0.47K resistor replaces L656 in line to Q651 B. (b) 0.33 ohm resistor added between L650 and Q651 E. A resistor also replaces L657. Still lasted only 2 years. Any better ideas ?
(George)

<HR align=left width="100%" SIZE=2>
Vestel TV (11AK19 Chassis)
At switch on front l.e.d turns green, blinks 3 times then set returns to standby. All h.t voltages rise, then fall away as set goes into standby
Dry joints IC807
(Lance)

<HR align=left width="100%" SIZE=2>
Panasonic TV Model: TX-14B4T (Z185 Chassis)
This set had a bright picture, no off air video and no video via scart
The cure, thanks to Panasonic technical was to replace the memory chip I702 (X24C)
(Sparky)

<HR align=left width="100%" SIZE=2>
Grundig TV (CUC6310 Chassis)
No east-west
Check R569, TDA8145, D566
(Louis)

<HR align=left width="100%" SIZE=2>
Grundig TV Model: ST82-774 TOP/EURO
Not starting, power supply working perfectly display present
Replaced the horizontal deflection power driver ic TDA8140
(Rui Loureiro - <st1:country-region w:st="on"><ST1

lace w:st="on">Portugal</ST1

lace></st1:country-region>)

<HR align=left width="100%" SIZE=2>
Thomson TV Model: (ICC17 Chassis)
Standby led fault codes and meanings list / standby led flashes then pauses
Code meanings are as follows: 10 = child lock mode, 11 = timer mode, 14 = there is no response from Iv01, 15 = there is no response from IS40, 20 = bus access prohibited by software, 21 = bus data line held low, 23 = bus clock line held low, 25 = switched 5v supply missing, 26 = crt is not warming in the allotted time, 27 = deflection failure more than three times, 28 = IF01 guard voltage (pin 8) exceeded, 34 = no response from the nvm chip IR03, 36 = incorrect address passed to bus handler, 37 = unexpected level on NMI line (power fail), 41 = bus data line not recoverable
(Anonymous)

<HR align=left width="100%" SIZE=2>
Sony TV Model: (FE-1 Chassis)
No power although relay operates (main p.s.u inoperative)
Check IC606 (STRF6654) for failure, also check resistors R659 (0.33ohms,3w), R660 (0.39ohms,3w), fusible resistor R603 (0.1ohms,0.5w) and capacitor C625 (100uF,25v)
(Josh)

<HR align=left width="100%" SIZE=2>
Sony TV Model: (FE-1 Chassis)
No teltext just P100
This problem was caused by Q405 (2SC2412K) being s/c
(Josh)

<HR align=left width="100%" SIZE=2>
Sanyo TV Model: CE32WP2 (WB2-A32 Chassis)
Dead set, standby L.E.D lit
Check capacitor C634 (2n2, 2KV) in power supply for o/c or s/c
(Alternative electrics)

<HR align=left width="100%" SIZE=2>
Sanyo TV Model: C25EG95B (EC3-A25 Chassis)
Dead set (no start up)
Replace R321 (120K)
(Adrian Parry)

<HR align=left width="100%" SIZE=2>
Philips TV Model: 28PT4521/16 (MD1.1E Chassis)
Fails to stop at station when tuning
R3568 (100Kohm)at side of L10 connector
(Jorge)

<HR align=left width="100%" SIZE=2>
Grundig TV Model: M70-495 (CUC-3800 Chassis)
Dead set
I replaced the BU546 transistor in the power supply and resoldered some paths on the PCB. An intermittent soldering path to the collector of the transistor was the reason for the destroyed BU546
(Tom Bevers)

<HR align=left width="100%" SIZE=2>
Samsung TV Model: TXG2547 (K51A Chassis)
No power, Voltage not changing on pin 18 IC901 (SZM-368ET2)
Check dz906 (short), key-in 1 pin 9 of ic901
(Colin)

<HR align=left width="100%" SIZE=2>
Philips TV Model: 2B (2B Chassis)
Very low HT voltage
The HT was so low that a 60W lamp connected across the HT line as a dummy load wouldn't even slightly glow. The problem was caused by a wrongly fitted PTC, it was a 96012 type, when the right PTC 96012 was fitted the problem was solved
(Angovisao)

<HR align=left width="100%" SIZE=2>
Sony TV Model: KV2184
Main fuse blasted
Replace the STR50115, also replace the mains electrolytic capacitor
(Seles)

<HR align=left width="100%" SIZE=2>
Grundig TV Model: (CUC2080 Chassis)
After replacment of FBT, the set starts and reverts to standby mode immediately. If the Crt heater is fed by an external transformer (i.e. 6 V. a/c), the screen will show a very weak light, except in the corners
13V. was present on pin 11 of V. output IC TDA8350Q during the brief moment when the set tried to start. The TDA8350Q was found to be defective and was replaced. Don't forget to check +A voltage after replacing the FBT
(Jose Carlos Pinto - <st1:City w:st="on"><ST1

lace w:st="on">Oporto</ST1

lace></st1:City>)

<HR align=left width="100%" SIZE=2>