جميع اعطال التليفزيونات والفيديو بكل انواعها - الصفحة 3

عطية حسن محمود · 01:32 PM

<?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com

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

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

lace></st1:City> TV Model: C1709T
Dead (H.T high and tripping)
Replace ZD903 and R909 (39K) also check ZD901 (2.7v) for s/c
(Anonymous)
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Panasonic Video Model: NV-H75
Dead
Check C1003 (1uF, 100v) then the STRD1806 and D1004 for s/c
(Anonymous)
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Philips TV Model: 28ML8805-16B (FL1.6AA Chassis)
Disturbed sound in left channel
Check IC7009 (LM833) on LSP
(Kjell Mathisen)
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Philips TV Model: 28ML8805-16B (FL1.6AA Chassis)
Ticking noise and line in picture
Transistor 7381 (BC848C) defective when hot
(Kjell Mathisen)
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Mitsubishi TV Model: CT2227BM
Intermittent no sound or picture
Desolder, then resolder Line Driver Transformer connections
(Steve Johns)
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Philips TV Model: 28ML8805-16B (FL1.6AA Chassis)
Power supply faults. BUX85F in micro SOPS defective
Change the value of C2260 to 4n7F, replace 7270 with transistor BD825
(Kjell Mathisen)
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<st1

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

lace> TV Model: 28DG17UG (TX807CS Chassis)
To remove the protection (to assist with fault finding)
Remove TL061. It's a surface mounted transistor located near the line o/p transformer
(Sparky)
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<st1

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

lace> TV Model: 28DG17UG (TX807 CS Chassis)
No start up, l.e.d flashes orange 7 times then stops. All rails on secondary of chopper seem ok
You will probably find the line o/p transformer is at fault
(Sparky)
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Sony TV Model: KVS3432U (AE2 Chassis)
Front led flashing 13 times, HT at first came on at 139V then went to 75V going off etc (shuting back down in protection mode)
Found R854 open circuit on -15 volt line (off line output transformer)
(Errol Rankin)
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Finlux TV Model: 71G2 ID:54361330 (Stereo Plus Chassis)
Bottom half of the screen is black. Very distorted picture in top half. Volume weak. The programming menu, and the "Extra" menu, has disappeared. In "Service mode" (Mute, M and TV buttons in sequence), all settings are set to the max. value (63)
The existing IC "SPL 40R01" in location NF10, and the connected EEPROM in location NF80, was replaced with replacement IC "SPL 51R02" and an empty EEPROM. It comes in a kit, which also includes installation instructions and a user manual
(H. Rosenberg)
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Jvc Video Model: HRD560
3/4 of the playback picture is snow may look like duff heads!
Check 3.3uF,50v capacitor on lower drum motor pcb, this is an smd type but can be replaced with standard cap mounted on its side and tilted downwards slightly to clear mech chassis
(K Ferrier)
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Panasonic Video Model: NVJ35
Noisy capstan
C22 in Power supply fixed it for me
(Anonymous)
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Various Remote Controls
Handheld remote problems, quick check which everybody might not know
Switch broadcast radio to medium waveband, around mid-band. From about two feet away point remote at radio and press any button. All buttons should cause radio to bleep. Not clever but useful. Any other ideas ?
(David Kilmarnock)
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<st1

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

lace> TV Model: M3715 (TX805 Chassis)
Dead, 1.6A main fuse blown
Replace TP10 (S2000A) and DP21 (2V7 zener)
(Spiros gr)
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Goodmans TV Model: 1430RA (ONWA Chassis)
Volume up full, red bargraph but no sound, Picture bargraphs also at full and will not adjust
Disconnect pin 1 of MN1220, press vol down then store then resolder pin 1 - only seems to correct problem if resoldered while unit is powered.
(Bku)
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Mark TV Model: TVD1420TX
No video, grey picture with white lines
1ohm resistor on the mainboard next to the connector for the rgb
(Jonnykvist)
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Jvc TV Model: C14E1EK
Dead, in standby, HT present at relay RLX401, no 12 volts at C419
R425 (5.6ohm) o/c, ZD402 (12 volt zener) s/c and C426 (2200uF, 25volt) faulty
(Steve Spriggs)
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<st1:City w:st="on"><st1

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

lace></st1:City> TV Model: C28WS10TN
Poor starting, some times comes on then cuts out with LED going out
Dry joints along centre heatsink where the three ICs are mounted, reflow solder on ICs and then check HT (160 Volts)
(Anonymous)
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Sony TV Model: KV-25M80 (BG-2 Chassis)
Dead
5V Supply Transformer Short
(Subhash)
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Goldstar TV Model: CF28A54L (PC58A Chassis)
Lignes horizontaux aut de l'immage après remplacer
IC - TDA8350Q, Condo 470uF, 25V
(Anonymous)
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Sony TV Model: KV28WS2U
No sound, speakers pop out if volume is raised from zero. Audio output from Dolby (A1) board at +5v dc.
Lightning damage to this set and connected VCR. Centre/surround amplifier IC shorted blowing IC protector to its negative rail. Both amplifier ICs replaced as a precaution. No damage to Dolby (A1) board
(Simon)
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Philips TV (L6.2 Chassis)
Picture is horizontally narrowed and deformed
Capacitor C2913 (390nF, 250V) on the deflector PCB had lost capacity
(Patje - <st1:country-region w:st="on"><st1

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

lace></st1:country-region>)
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Thomson TV Model: 28WR23EG (ICC17 Chassis)
AV1, AV2 are fine but AV3 do not work. Picture may be ok but no sound
Replace BA7604N, and check CX64 (47pF)
(Daniel Simões - <st1:country-region w:st="on"><st1

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

lace></st1:country-region>)
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Daewoo TV (CP775 Chassis)
Dead - faint ticking from PSU
LOPTx faulty - check Q401 (D18809a4 aka 2SD1880) for s/c and D406 for s/c
(Kdf)
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Philips Video Model: VR110
Power supply tripping
Damaged print at one of the pins on primary side of transformer
(Mark T)
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Sony TV (FE-1 Chassis)
Loss of one colour with teletext and on-screen displays
Check the appropriate 2SC2412K transistor Q007 (green), Q008 (blue) or Q009 (red)
(Josh)
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Philips TV (GR2.4AA Chassis)
Power Supply Protection enabled
Replaced zener diode 6561 (BZX79C68)
(Angelo)
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Sony TV (FE-1 Chassis)
Band of interference down left of screen on dark scenes
This was cured by adding a 1000pF, 2kV capacitor (part no. 1-161-731-81) in parallel with D539 in the EW diode modulator circuit
(Josh)
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Bush TV Model: 3114AT
Dead, stuck in standby
Check R502 and R503 these should be 330k directly in front of the STR Transistor
(Darryl Nicholls)
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Philips TV Model: GR1AX (GR1AX Chassis)
Will not start up from cold
Check if 95v line increases to over 100v when TR7628 (BF423) is chilled. If so, replace D6629 (BZX79-C12) and re-check 95v/re-adjust R3625. May also be worthwhile replacing TR7628 and C2629 as a precaution!!
(Marty)
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Sony TV Model: KV2165MT
Main fuse blasted
Replace the STR50115
(Fky)
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Amstrad TV Model: CTV3028N
No tuning
R124 (15K) o/c, (33 Volt tuning supply)
(Apollo service centre)
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Loewe Opta TV Model: Contur T70 (C9000 Chassis)
Problems starting-up from standby
May be a problem in the power section. Replace C622 (100uF) and C631 (100uF)
(Valter)
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Goodmans TV Model: 1410 (TX805 Chassis)
Dead
One of the three series connected 68Kohms resistors was open-circuit. RP44 is rated at only 0.25w. It hides beneath two large green power resistors. The other two 68Kohm resistors are rated at 0.5W. We replaced them all with 1W resistors. Soak tested ok
(Ann Reid)
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Orion TV (5130-2RC Chassis)
Picture was black and white, twisted, sound came and went
If switched on for a long time the picture improved but was still not OK. Capacitor C210 in the IF section had failed. Replaced and all OK!
(Pavel)
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<st1:City w:st="on"><st1

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

lace></st1:City> TV Model: C2864TN
Psu in slow trip. 630mA fuse on E/W panel blown
Top E/W diode leaky D704 (BY228)
(Gees)
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Panasonic Video Model: NV370E
Display shows dew sensor at irregular intervals and different circumstances causing the video to go in standby mode
Bouncing effect of power switch on timer board. Only one section of this double pole switch is used. Add a 1nF capacitor in parallel to this switch and use the second section as well
(Robert)
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Sony TV Model: KVM1400
Will not power up, red LED blinks twice
Replace ICP fuse in HT line PS801 (N15, 600mA) mounted adjacent to pin 7 of LOPT
(Dave)
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Panasonic TV Model: 21LIT
Dead set, only red LED is on
Replace IC AN5606k
(Imran Khan)
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عطية حسن محمود · 01:32 PM

Loewe opta TV Model: Profile (E3000 Chassis)
White vertical line only displayed on tube
Check for dry joint or burnt track on Horizontal Yoke PCB socket or main board
(Andrew booth)
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Thomson TV (TX91 Chassis)
PLL will not lock for all frequencies (keeps running during program search), on screen display moving / unstable
Changed the tuner and the STV8224 also check transistor at location TV02 is ok
(Anonymous)
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Hitachi TV Model: C2546TN
Prodedure to remove `C46TN` from screen
Press the 2 VCR buttons together, the menu will appear, then switch to standby mode, turn appliance back on and prompt should have disappeared. When tv is turned on it will ask you to search for a channel, select this and then cancel
(Anonymous)
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Panasonic Video Model: P03RMK2 (VJDO3D40 Chassis)
Int capstan motor stops responding
Changed the IC No. BA6871S
(Anonymous)
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Akura TV Model: CX35 Nicam
Vertical height oversize
The eprom was found to be faulty (nvm)
(Sjs elec)
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Grundig TV Model: P55449 (CUC4401 Chassis)
Dead but comes on when warm
Replace C633 (100uF) in the p.s.u
(Anonymous)
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<?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com

<?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com

ffice:smarttags" /><st1

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

lace></st1:City> TV Model: C2119E (Issue9 Chassis)
No sound control, procedure to exit factory preset mode
Hold 'VOL+ and 'VOL- buttons whilst switching on
(John Mclaughlin)
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Sharp TV Model: 54DT25S
Dead with ticking noise from line
Replaced C622, C604 and Q509
(A. McGovern)
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Sony TV (FE-1 Chassis)
Excessive width
This was due to Q532 (2SK2251-01) being s/c, it is advisable to also check other EW circuit components as a precaution
(Josh)
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Sharp TV Model: 54DT25S
Frame foldover
Check C713, Q510 and Q505
(A. McGovern)
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Samsung TV Model: CB7230WT
Vertical output problems, Vertical output ic fails repeatedly !
Fit a new IC, clean old heatsink compound, add fresh compound thinly on the surface. Now disregard all the other modifications previously suggested and ADD a large heat sink on the existing heatsink (screw another one on top)
(Trance)
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Philips TV (L9.2E Chassis)
Fuse 1572 blown
Disconnect pin 44 on IC7600, if the fuse stops blowing suspect processor IC7600. It is really expensive, at least in <st1

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

lace> !
(Kalle Birgersson)
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Sony TV (FE-1 Chassis)
No picture or dark picture
Check R516 (56Kohms, 0.5w) or R517 (27Kohms, 0.25w) for high resistance or o/c
(Josh)
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Watson TV Model: FA 5129 (11AK19B-1 Chassis)
NÃO DÁ VIDEO
QUERO O PROGRAMAÇÃO DO INTEGRADO DE MEMORIA DO 24CO8
(Anonymous)
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Toshiba Video Model: V730UK
No display, red LED flashing
Replace C1SS35 (1000uF, 10V)
(Anonymous)
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Thompson TV Model 24WK24U (ICC17 Chassis)
Set is tripping with flashing from the red standby light
Short the collector of TL71 to earth, if the set comes on you will find the frame chip is blown and ZL11 cp is o/c. If the set still wont come on them the LOPT is suspect
(Geoff)
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Philips TV Model: 25PT512A-05 (GR2.2 Chassis)
Dead set HT 140V ok
Replace standby Thermistor THY6670
(Wayne Haverson)
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Sanyo Video Model: VHR-796E
Dead
PR512 in the PSU was o/c
(Paul)
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Sony TV Model: KV2020
No Sound
Replace sound i.c (TBA120U)
(Anonymous)

عطية حسن محمود · 01:33 PM

Toshiba TV Model: AVM 2505 (G3V25050 Chassis)
Will not come out of standby, no picture
If at power on voltage on pin 37 of the micro drops low then reverts to 5v suspect memory chip ICA07 (Toshiba 23319016)
(Anonymous)

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Toshiba Video Model: V705B (V3 CAT 1/2 Chassis)
Intermittent dead
When pin 11 of IP001 (U4614) jumps between 8v and 10v suspect shorted 2SA1020, as the secondary is shorted, leaving the chopper switching between on/off states
(Liran Daniel)

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Panasonic TV Model: CT-T14R
El diodo en paralelo con condensador electrolitico C810 vuela porque este voltaje esta bien alto cerca a 200 voltios debe ser 138v
Cambiar la R610 de 110k (estaba alterada)
(Juan)

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Vestel TV (11AK19 Chassis)
Screen blanked out with 4 coloured lines two thirds of the way down from the top of pic. Sound OK
100 ohm resistor connected to pin 6 of the frame output chip was o/c. The IC is TDA8356. The resistor is R704 and is on top of a small hole in the chassis
(Raul Almeida)

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Grundig Video Model: VS500VPS
All power is oscillating
Select 4934 on remote then 0000 key, should then clear
(Anonymous)

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Panasonic Video Model: NV-HD625
Loss of colour
Filter BP301 may have poor internal contacts
(Anonymous)

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Bush TV Model: 2059NTX
Dead, stand-by light on
All power supply voltages OK. no drive to line output. IC102 faulty (TDA4505E)
(Apollo service centre)

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Naiko TV Model: N2811W (PE92 Chassis)
The display is blue with bad graphics and parameters wrong
The 24C16 (IC02) EPROM was faulty as Bush WS6674, Got from CHS for £4
(Roger Scales)

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Panasonic TV Model: TC15M1R
Tries to start, led lights once, and shuts down
Disconnect pin 6 of loptx, set should run with frame collapse. Replace frame IC to effect cure
(Andy Woods, review tv, ffice:smarttags" /><ST1

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

lace>)

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Philips TV Model: 25PT532A/05 (GR2.2 Chassis)
Power supply dead, blowing fuse
Fault was transistor BUT124F (7625) short circuit, replaced Transistor and also changed ic CNR50 (7614) and TDA8385 (7600) this solved the problem
(Jon, <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com

<ST1

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

lace></st1:City>)

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Jvc TV Model: AV21F1EN
Channel reception lost if tuner socket moved
Dry joints on IC522, IC521 and IC541 (located in the big heatsink about middle of the main pcb)
(Jose Carlos Pinto - <st1:City w:st="on"><ST1

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

lace></st1:City>)

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Philips TV (CTN-BB Chassis)
Dead. F1500 o/c, mosfet s/c
Mosfet T7525 shorts, due to smoother cap C2505 goes low capacity. IC7514 (TDA4605) must also be replaced
(Jose Carlos Pinto - <st1:City w:st="on"><ST1

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

lace></st1:City>)

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Bush TV (ONWA Chassis)
Dead
Fit a power supply kit from SEME RK215 for a safer and reliable repair
(Anonymous)

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Philips TV Model: 14PT1352/58 (L6.1AA Chassis)
Sound goes off and no remote control functions when heated
This was found to be due to a faulty micro
(Anonymous)

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Bush TV Model: 11AK19 (11AK19 Chassis)
Lack of width / no ew control
The east west fet Q603 (BUK444-200A) was short and R629 (2.7ohms fusible) was open, replacing both cured the problem. Addition to above: R629 (27ohms 110deg tube) found open without Q603 or other component failure, problem fixed by replacement R629
(Anonymous)

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Panasonic Video Model: NVHD100
Dead after storm
Check the STRS6545 regulator chip and the mains fuse
(Anonymous)

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Philips TV Model: 21PT5505/05 (L9.1E Chassis)
The fault with this tv was a snowy picture (no channels tuned in) also the permanent 33V supply on pin 9 of the tuner was low at only 1.6V
The first thing i tried was a resistance check between pin 9 and ground. The reading was only 120 Ohms. There's a surface mounted cap right next to pin 9 of the tuner. This was found to be leaky, It's value is 47nF. Also resistor 3442 (3.9K) was o/c
(Sparky)

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Lg TV Model: CI29H40 (PC8KA Chassis)
There was a bright white screen with flyback lines on this set. The A1 adjustment had very little effect
I found that IC901 (TDA6108JF) on the tube base was faulty, pin 7 (blue o/p) and pin 8 (green o/p) both read s/c to ground. Note: this chip was probably taken out due to the tube flashing over as in my case
(Sparky)

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Philips TV (ANUBIS A Chassis)
Low Contrast
C2448 (47uF, 200v) open circuit
(Paul Willis)

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Bush TV Model: 1473T
Dead set, Blown BU808DF
Replace the BU808DFI and check or replace C602 in the base feed. The drive appears normal, but the set can be slow to start, the BU will overheat & eventually fail again
(Steve Hogan)

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Jvc Video Model: HRD750
Dead
This was due to C14 (1uF, 63v) in p.s.u being faulty, replaced with a 2.2uF, 63V
(Markus)

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Seleco TV Model: 26SA37NL
White line in middle screen, several spikes
Check power switch for arcing, also check 1 ohm resistors on switch board for possible dry joints
(Anonymous)

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Toshiba TV Model: 3798DG (C8SS Chassis)
E/W Pincushion distortion
Replace D461 damper diode (ERC20-06)
(Magic man)

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Philips TV (GR2.2AA Chassis)
Protection circuit operating intermittently
Diode 6592 was found to have leakage causing voltage to protection circuit to be too high, Should be 23 - 28mV
(Hassan Didi)

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Salora TV (L Chassis)
Dead
DN15 s/c (8v line)
(Anonymous)

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Mitsubishi TV Model: CT29B2STX
Blank raster with sound / field collapse
The field output chip IC451 (TDA8178S) was faulty, as this original Mitubishi part was no longer available a kit had to be fitted (no.H27PO14010 for this model), this uses a different chip - type STV9379
(Josh)

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Nei TV Model: C25F4FR (CE25 Series Chassis)
Int failure of the TDA8380 and SGSIF344
Connect wire link between jungle i.c ground lugs to chassis
(Cristi)

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Samsung TV Model: CK-5320ZR (SCT11D Chassis)
Field collapse
Check R410 (1ohm) in feed to D403 for o/c
(Anonymous)

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Toshiba Video Model(s) V632UK, V642UK, V752UK, V852UK
Head Switching Point Adjustment
1) Playback the alignment tape.
2) Press button SW713 on Main PCB with pincers to set adjustment mode
3) Press the SP/LP button on the remote control then adjustment is done automatically
4) Turn the Power off.
(Donny)

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Sanyo TV Model: 21BN1
Dead, l.e.d. lit
R620 o/c. R621 and R620 replaced (both 120K)
(A. Gould)

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Mitsubishi TV Model: CT25M2TX
Frame collapse, destruction of AN5521 frame chip at switch on
Replace the AN5521 then replace the 47uF, 35v electrolytic in the power supply. Also check the 330uF, 35v capacitor next to the frame chip for leakage
(R. Higton)

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Hitachi TV Model: C32FW523NA (A8 Chassis)
Procedure to enter service mode
Switch tv on then press menu then press vol up and vol down on the front of the set simultaneously and hold until menu appears
(Simon Edwards)

عطية حسن محمود · 01:33 PM

Hitachi TV Model: C32FW523NA (A8 Chassis)
No or very dull picture with osd and text just visible, A1 control makes little difference, looks like poor crt
18v zener diode Z703 s/c located near lopt, it is part of the acl beam current limiter
(Simon Edwards)

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Sharp TV Model: 66FW53H (DA100 Chassis)
Failure of Q601 (BUH515) and possibly Q506
Found dry joints on C613. Also R613 had burnt top of C613. Fitted new parts, found Circuit no longer available. Sharp by name sharp by nature came to mind. Set only just over two years old
(Anonymous)

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Sharp TV Model: (4BSC Chassis)
Low width with lines across screen and feathered edges
Replace C623 and C602
(Steve Warner)

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Philips TV Model: 21PT166B/00 (AA5 AB Chassis)
No drive to LOP transistor
Middle sections checked OK. Carefully scoping the TDA8361's Hor. output showed gnd level to be at +0.8v not enough to drive next stage. Change the TDA8361
(Jac)

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Samsung TV Model: CW28C33N
Dead. in safety mode
Looks like l.o.p.t but was traced to small decoupling cap on 200v line (on tube base), dead short
(David)

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Panasonic TV (EURO 7 Chassis)
Procedure to enter the service mode
Set bass to maximum, treble to minimum, then hold down the index button on the remote and press the v button on the set
(Josh)

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Proline TV Model: 28N1
Procedure to invoke service mode
Press and hold both the s/by button on r/c and vol-button on front of set whilst switching set on. Channel + and - select param and vol + and - adjust. S/by to store
Variant: As above but use vol up to invoke svc mode as above, yell-MEM on h/s to store
(Tony Blick)

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Salora TV Model: 1HCA
No Power - dead T700 and T701 (BUW41B) and R713 (22ohms, 5W). New parts work short time and dead again
Dry capacitors C712 and C726 (4.7uF, 35V)
(Raymundo)

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Hypson TV Model: HY1493 (3915 TH Chassis)
Popping or motorboating noise from speaker in standby
Check Q951 (JC501-Q, mitsubishi Pt no. 260P543050), and Q952 (2SA950-Y, mitsubishi Pt no. 260P255040) and for dry joints around R954, R974 and R985
(Anonymous)

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Philips TV Model: (GR2 Chassis)
Sound but no picture
Check the ffice:smarttags" /><ST1

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

lace> cable for short circuit
(Anonymous)

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Grundig TV Model: ST82-675/9 TOP (CUC6380 Chassis)
Dead set, Tripping
LOPTX short circuit between most pins!
(Anonymous)

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Goodmans TV Model: GTV69W3 (11AK19 Chassis)
East West distortion, only 16:9 available
Resoldered numerous dry joints around east west and heater circuitry. R629 (27R 1/4 W Safety) found open circuit. Replacement + resoldering cured fault.
(Jim Ross)

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Philips TV (CP110 Chassis)
Image appeared after a 5-20 minutes, sound was choppy when changed by the remote
Replaced C2690 (100

F, 50V) with a 100

F, 63V type, this is located on the small overvolt board in the power supply area
(Jy)

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Philips TV (CP110 Chassis)
Vertical ripples on horizontals
Replaced C2633 (100

F, 25V)
(Jy)

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Salora TV Model: K (K Chassis)
No e/w correction
This was due to T504
(Anonymous)

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Finlux TV Model: SN87A2
No sound or picture
Check R44 for o/c and D20 for s/c
(Anonymous)

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Sinudyne TV Model: 34B0A
Geometric distortion, Pillow, and picture enlarged horizontaly
The problem was a short from GND to pin 11 inside IC301 (TDA8350Q). This pin is the output of amplifier for geometric correction signal. Replace IC301
(Anonymous)

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Grundig TV (CUC4400 Chassis)
No image from tuner. Image from AV input (rgb) is rolling over the screen (no synchronisation)
Check if teletext is present at the top of the screen. If this is ok replace the TDA5931 (normally the sound will also be missing)
(Trancy boy 1)

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Grundig TV (CUC4400 Chassis)
E.H.T very weird, E.H.T. transformer makes strange sound, no image
Measure pin 1 of the TDA2579, if there are vertical pulses then measure pin 11 of the TDA2579 for hor. pulses, If missing, or voltages are very low (Mv) replace the IC. The ref. voltage on pin 12 will be present if the TDA2579 works correctly. Measure on pin 10 of the PS
(Trancy boy 1)

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Sansui TV Model: SV-20BG (11AK03 Chassis)
No vertical
R822 (15K) open
(Joao Soares)

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Panasonic Video Model: NVHD100
Narrow sync pulse output in E-E but ok when pre-recorded tape is played
Replace 3.3uF, 50v SM capacitor on hybrid IC301, If fault persists replace IC301 on the Y/C sub board
(J. Herbert / Anonymous)

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Sony TV Model: (BE1 Chassis)
Loss of sound when set was cold / extremely distorted sound when cold (after set was turned on)
Sound recovered within a few minutes of turn-on and was then normal. Check the electrolytic capacitors and diode near to the audio output IC heatsink. 100% rectification was achieved by replacing the diode and small value electrolytics in the immediate area of this IC's heatsink
(Steve Larkins)

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Sharp TV Model: 51DT25H (U Chassis)
No audio R305 o/c
R305 (2.2ohm), Q3021 (BC636), Q3011 (BC635)
(Sakander)

عطية حسن محمود · 01:34 PM

Nokia TV (Euro Stereo 2 Chassis)
Hard to turn on, hissing sound, bad picture
Check C787 (10uF, 50V)
(Kalle Birgersson, Uddevalla <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com

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

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

lace></st1:country-region>)
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Sony TV (BE3D Chassis)
Picture too big, maybe strange colors, shuts down after a few seconds
Check for shorts in IC606 (9V voltage reg)
(Kalle Birgersson, Uddevalla <st1:country-region w:st="on"><st1

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

lace></st1:country-region>)
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Philips TV Model: 28PW6005 (A10 Chassis)
Changes to ext 1 when watching tv (ok with video input)
IC7064 defective, replace it. Philips best nr= 311125054501. price = 48 euro, after replacement the smart settings have been set to 255 read the instruction note for this software!! Code number instruction note = 996500013923
(Steve Walschot)
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Panasonic TV Model: TX-21S3T
No line drive
This one had me puzzled for a while until I found that diode D861 was open-circuit (intermittently!)
(Graham, Falsgrave Electrical)
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Matsui TV-Vid Combi Model: TVR185
Accepts tape then immediately ejects it
The capstan motor was faulty. Fitted new motor
(Anonymous)
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Toshiba TV Model: 28W8DB
No frame drive however sound and line drive is present
E/W correction chip TA1240 (at front of line/frame chassis) was defective, replacing the IC cured the fault
(Dave)
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Samsung TV Model: CS3339Z
No picture No sound
Faulty IC TDA6107q on crt board
(Imran)
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Seg TV Model: CTV7951GB
Dead set
Check the following caps, C828 (1000uF, 16v), C817 (1000uF, 16v) and C848 (100uF, 25v). The caps take out the following components in the power section. Chopper FET Q802 (2SK2545) equivalent BUZ901A (need to isolate BUZ901A from heatsink), R817 (2.2ohm/5W), D805 (BA159), D802 (IN4007) and D801 (IN4007)
(Ian Paterson)
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Jvc TV Model: AV25SD4EK
Standby LED changes from Red to Green as normal, but no picture or sound. Set appears not to come out of standby
Check for dry joints on the line output transformer tags. Resolder all as a precaution anyway
(John)
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Sharp TV Model: 66FW53H
Colours ramping, poor greyscale
Replace IC1002/3, Set will need reprogramming afterwards
(Chris Brunning)
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Philips TV Model: Various
Sound but no picture
Have found on some Philips tvs (if they are older then 15 years) that a 2.7r resistor close to the HT transformer goes open, resulting in sound but no picture
(Anonymous)
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Philips TV (GR1AX Chassis)
Sometimes does not start up from cold, but starts well from power off or standby after a few minutes
After checking all PSU components and consulting many colleagues, casually the tip of my iron touched the body of T2628 (BF423) and the set started. After more then 20 attempts, I realised that this transistor became intermittent when cold
(Jose Carlos Pinto - <st1:City w:st="on"><st1

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

lace></st1:City>)
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Samsung TV Model: CX5012
Volume low, even at maximum setting
Replaced IC601 (TC4066BP) close to IF can
(Jose Carlos Pinto - <st1:City w:st="on"><st1

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

lace></st1:City>)
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Mitsubishi TV Model: BDS29S (11AK19 PRO Chassis)
Picture is black with faint green retrace lines, sound etc. ok
Changed TDA6108JF on CRT board, and nearby 10uF electrolytic which looked damaged. Fixed fault. A resistor next to the capacitor had been changed before but tested okay this time
(Joe Kelleher)
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Sharp TV Model: 66FW53H
Dead - neon lit ... another fault!
Check the BZW04145 diode across C720, if short circuit, replace and also replace opto-isolator IC704 (MOC8106) and IC706 (TL431 voltage reference). You can put an 817 opto-coupler in diagonally
(Andydos)
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Sharp TV Model: 66FW53H
Dead - Neon lit
R713 and R714 (560K) high or o/c
(Andydos)
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Philips TV (GR2.2AA Chassis)
Does not work after <st1

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

lace> has been changed
Check / change D6561 also change the TDA2579B if there are any sync problems
(Anonymous)
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Philips TV (GR2.2AA Chassis)
Dead, no line oscilation, power supply and line output stage are OK
Check / replace C2549 (390 or 470nF / 400V) and C2545 (1n5 or 1n2, 2000v)
(Anonymous)
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Philips TV Model: 14GR1221 (GR1AX Chassis)
Procedure to enter or exit hotel mode (child lock)
Put the set on programme 38, press either store and pr - (to lock) and store and vol - (to unlock), or, press pr - and vol + (to lock and unlock), press buttons on the set (not remote)
(Anonymous)
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Sharp TV Model: TV14 (Cinema Borg)
When set switched on "ENTER YOU LOCKCODE" appears on screen, customer had forgotten the lock code
Replaced the Microprocessor(64 pins)
(Engr. Etpiv)
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Sony TV Model: KV20TR22
Intermittent reception on VHF / UHF
Resolder tuner especially the around the tuner I.C
(Engr. Eugenio T. Penalosa iv)
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Bush TV Model: 34BKB 3463NTX/4400
Dead / excessive width and e/w bowing
Capacitor CL15 was dry jointed and transistor TL4 was s/c, also CL18 (22uF, 250v) was stressed, after replacing these components had excessive width and e/w bowing, the TDA8350Q field ic turned out to be the culprit
(Stuart)
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Grundig TV (CUC3500 Chassis)
No sound (AV-Mode sound ok)
Replace IC2210 (U2829)
(Anonymous)
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Bush TV (11AK19 Chassis)
Lack of width / no ew control
The east west fet Q603 (BUK444-200A) was short and R629 (2.7ohms fusible) was open, replacing both cured the problem. 2 Values for this component: 2.7 ohm in 90 degree crt's ... 27ohm in 100 degree crt's. 32" models value is 56 ohm * 1 watt safety
(Rob Faulkner - Homeview tv)
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Proline TV Model: 28N1 (F19 Chassis)
Int will lose eprom settings, ie Height etc
The Crt base was arcing internally
(Dave Waddingham)
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Hitachi TV Model: C2558TN (G8Q Chassis)
This set would not switch automatically into A/V mode when a video or any other equipment was connected via the scart
The set could manually be placed into A/V from the tv's front end controls. The cure was to replace ZD301 (ZTE251). I assumed it was a 2V but as i had none in stock i tried a 2.7V zener which worked perfectly. It's located near the scart socket
(Sparky)
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Panasonic Video Model: NV-G40
Picture noisy on all channels
Transistor Q4 (D1330) o/c
(Pnx)
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Sony TV (FE-1 Chassis)
No power (no standby power supply op)
IC609 (TOP209) was faulty, also checked C640 (47uF, 25v), D631 (MTZJ-12B), D628 (P6KE200), D629 (UF4005PKG23) and R627 (4.7ohms, 5%, 0.25w) as a precaution
(Josh)

عطية حسن محمود · 01:34 PM

Hitachi TV Model: C2558TN (G8Q Chassis)
The H.T wouldn't vary at all, even though it was actually at the correct level (157V)
ZD941 (BZV10) was found to be o/c. It's a 6.5V zener diode and not as i had assumed by the numbering on it a 10V. ZD941 and the H.T pot VR941 are located next to the optocoupler
(Sparky)
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Nokia TV Model: SP71D1 and others (Stereo Plus Chassis)
Tv does not start from stand-by. Indicator led blinks quickly
Replace the two smd condensers in parallel between pin 2 of IC NO62 (reset line). Remove all of the red glue below the condensers. These condensers must be replaced by new ones of 47nF and 100nF in parallel. IC NO62 (TDA8137) sometimes must be also replaced
(Fernando Almeida)
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Panasonic Video Model: NVF70
Bad picture, may be stripy with blue spots
Change C22 in the power supply (680uF, 10V). I used a 1000uF, it works great
(<?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com

ffice:smarttags" /><st1

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

lace>)
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Sony TV (FE-1 Chassis)
Changes channel or volume adjusts by itself
Check S900/1/2 on pcb H1, alternatively this could be due to failure of IC005 (CD4052BCM-FL63) on pcb A
(Josh)
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Akura TV Model: CX11
Appears to be no line drive but if scoped the drive is at very high frequency
Suspect C308 (3.3nF) high stability type
(Jamal)
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Panasonic TV Model: TC1400T
Int loss of signals
Check R545 for dry joints
(Anonymous)
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Sony TV (FE-1 Chassis)
Set shuts down shortly after start up with standby led flashing 2, 4 or 5 times
Check / replace chip resistors R543 (47Kohms) and R541, R573 and R575 (all 100Kohms)
(Josh)
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Grundig TV Model: 8214
Poor linearity / Vertical deflection problems
Check +D voltage on pin 12 of the vertical deflection module. If this voltage is less then 35V or has ripple replace C628 (3300uF, 50V), also check fuse SI627 (T3,15A). Sometimes this fuse has resistance causing a voltage drop across it
(Fernando Almeida)
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Rca TV Model: CTC166/167
Audio, no video
Change Capacitors C4501 and C4502, in the vertical section
(Anonymous)
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<st1:City w:st="on"><st1

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

lace></st1:City> TV (ICC9 Chassis)
Ew distortion
Check / replace CL42 (4.7uF, 160v), don`t forget to use 105 Celsius type replacement
(Anonymous)
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Sharp TV Model: DV3760H
Dead, led flashing red/green at first, then going to red standby
Replace C604 (1000uF, 16v) elec. cap. It is in the decoupling circuit for the 5 volt supply
(John Clifford)
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Samsung TV Model: CB5020 (P58SC Chassis)
Tuning not stopping
Replace R116 (120Kohms) this was open circuit
(Anonymous)
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<st1

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

lace> TV (C Series Chassis)
No remote control op
Microprocessor MN15151
(Anonymous)
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<st1:City w:st="on"><st1

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

lace></st1:City> TV (TX92 Chassis)
Field fold-over / flyback lines visible at top of screen
Capacitor CF30 (47uF, 50v)
(Anon.)
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Panasonic Video Model: NV-HD101
No picture on e-e, I.F output ok
This was due to switching chip IC3901 (M51292FP) on the scart panel
(Anonymous)
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<st1

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

lace> TV (TX92 Chassis)
Dead, No LED, 2.5Amp fuse O.K. Some voltages present at BP02 ON/OFF switch connection. 160v at terminal D of TP16. 26v, 200v, 13v lines all zero
Replace TP16 (P6NA60FI) and diode DP17 (BZX55C15)
(<st1:State w:st="on"><st1

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

lace></st1:State>)
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Sony TV Model: KVA2542
Fault not limited to this model. Turning itself to standby, mostly when warm. Flashing error code on LED's.
Dry joint on IC TDA8179 (under metal shield). May need replacing with STV9379. May also need to alter picture geometry settings (HSIZE, HPOS, VSIZE, VPOS) in service menu
(Garth)
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Panasonic TV Model: (ALPHA 2W Chassis)
Squeal at switch on then goes dead, channel indicator ok
Check the l.o.p transistor Q551 for s/c, overvoltage diode D854 for s/c, R564 / R567 (fusible) for o/c and also check C808 (10uF, 63v) and IC801 (STR54041M) and locally for dry joints
(Anonymous)
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Vestel TV Model: 11AK19 (11AK19 Chassis)
Procedure to enter service mode
Go to installation menu, then press 4,7,2,5
(<st1

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

lace>)
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Vestel TV Model: 6392
Field collapse (no vertical deflection). No sound
Replaced resistor R818 (15k, 1w) which was o/c. This resistor is the limiter for the 33v tuning voltage
(Rui Loureiro - <st1:country-region w:st="on"><st1

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

lace></st1:country-region>)
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Goodmans TV Model: 1476TS
Set reverts to standby at switch-on
Check 200v line on tube base for short cct. I901 (TDA6103Q) goes s/c
(Jack - <st1:country-region w:st="on"><st1

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

lace></st1:country-region>)
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Sanyo TV Model: CBP2580
The word "factory" in a red box is permanently displayed on screen and sound volume goes from 0% to 50% to 100%
Enter service mode, go down to nvm and press volume plus on remote
(Anonymous)
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Toshiba TV-Video Combi Model: VTV1402S
Dead, or intermittent start up. No voltage supply to line driver
Check R504 (270k), feed to switching transistor. Goes high or o/c
(R. higton)
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Philips TV Model: 14PV163
Reverts to standby from switch on via TV or Video
No 5v rail because FET MTP3055 o/c. (BUZ71 will do nicely)
(Stu - sjs)
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Sharp TV Model: 66FW53 (widescreen DA-100 Chassis, 50 and 100Hz series)
E/W fault
Coil L603 (part num RCILP0286BMZZ) had severely burnt up and Q506 E/W driver 2SD2391 (Part num RH-TX0151BMZZ) was short circuit. If you have this fault check L604 for invisible dry joints, if you don't you may find you still have an E/W fault when you have replaced the faulty parts
(Regards - LB)
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Goldstar TV Model: CIT-9322
Volume down control on the set will not work
Everything else worked fine on this rather old model except the volume down control (i didn't have the handset to see if this was also the case via the remote). The cure was to replace the micro IC1 which was an M491BB1
(Sparky)
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Hitachi Video Model: VT530E etc
Playback picture freezes repeatedly when warm / capstan motor overhaul
This symptom is usually due to contamination of the capstan motor bearing which can in turn lead to overheating of the drive chip, the problem can often be remedied by dismantalling the motor and thoroughly cleaning the bearing then lightly lubricating with a suitable light oil before reassembly
(Josh)
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Hinari TV Model: CDTV2
Power supply fault, clicking noise, nothing else
Check C629 (100uF, 25v) for o/c
(Anonymous)
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Zenith TV Model: D32D51
Reddish picture
Replaced Transistor Q2005 Type 2N3906 (shorted)
(Anonymous)
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عطية حسن محمود · 01:34 PM

Mitsubishi TV Model: CT29B2STX
Line output transistor s/c, repeated failure
Replace the four caps in the power supply C905 (470uF, 35V), C906 (470uF, 50V), C909 (2.2uF, 50V) and C920 (100uF, 25V) also note transistor varies with different size c.r.t.
(Steve b)

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Toshiba TV Model: 217D98
Severe field distortion
Check capacitor C317 (2.2uF, 50V) in linearity feedback circuit
(Steve b)

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Aiko / Perdio TV Model: 512
Excessive brightness with flybacks
Check capacitor C120 (2uF, 250V) in first anode supply
(Steve b)

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Philips Video Model: VR722 (LUCY Chassis)
LSM-45 power supply faulty after power failure
Replaced elco 2112 (100

F, 385V) and capacitor 2116 (100nF, 400V). See also my tip about the philips VR-723 (Cooling down during power outtage). Cheers
(Leo hulstein)

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Philips Video Model: VR723 (LUCY Chassis)
Power supply LSM-45 would not start up after power failure
Cooling down of the machine during the power outtage triggered the problem: inside the supply module excessive heat is present that causes components to age rapidly, especially those that are located close to the heatsink. Replaced cap. 2116 (100nF, 400V)
(Leo hulstein)

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Sony TV Model: KV27EXR25
No raster, the set will click on but no high voltage
Replaced IC651 (on the power board) type STRS6301 (Note: Use an original STRS6301, not an STRS6301A unless the 6301A comes from SONY) This part does run very hot
(Billy sean)

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Philips TV Model: 27CE4599-33R (2A Chassis)
No sound, with sound at maximum you can hear a weak noise
Change IC7102 (U2830B if found, if not U2829B), this IC is located on the sound demod pcb
(Leffe)

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Salora TV (M Chassis)
Procedure to enter service mode
Press P then * then 0/AV then # then >M
* and # (change function)
Vol+ and Vol- (change value)
>M (store current value)
TV (exit service mode)
1..7 and . (bytes option)
(Salex)

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Samsung TV Model: CB5035Z
Stuck in osd mode, no functions
Change the eprom, check that the earthing of the green cable running from tuner is OK
(Leffe)

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Jvc Video Model: HRD720
Noise bar in playback, looks like error in the guides adjustment
The problem is the 3.3uf capacitor in the drum motor. This generates Pg signal errors. Replace it and give me a smile !
(Walter Rimini)

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ffice:smarttags" /><ST1

lace w:st="on">lace> (TX92 Chassis)
After replacing the line output TX the set still appears to be tripping
Try switching the set on with the remote control. The micro seems to remember the tripping state, the remote control re-setting it
(Anonymous)

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Toshiba Video Model: V709B (Samsung Chassis)
Very slow rewind / fast forward
Center Gear assy u/s, cracks and drags on chassis, same will apply to Samsung and some Sony machines etc
(Nigel, Trident audio visual)

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Goodmans TV Model: W322NS
Procedure to enter sevice mode
Switch off tv, hold in VOL+ button on tv and STANDBY button on remote, switch back on at mains switch then release buttons, set will then come on in service mode
Adjust with PROG. + - and VOL + - store with yellow button
(Nigel, Trident audio visual)

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Sanyo TV Model: CE28WN4B
Procedure to disable protection mode for fault finding
The protection mode can temporarily be disabled to prevent the set going into standby during fault finding by disconnecting R648 (note: safety procedures must be followed !!)
(Josh)

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Grundig TV Model: M70-1690 (CUC6369 Chassis)
Dead, SI621 (1.6amp) blown apart
Replace SI621 (1.6A), SI601 (2.5A), D620 (B380 C2000/1500) REC, T644 (IRFBC40) mosfet, IC631 (TDA4605-3), C633 (100uF,25v), this was caused by dry joints on C648
(Anonymous)

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Itt TV (Comp De 110 Chassis)
Does not start when cold, simply produces a very fast trrrr noise...
Increased value of C711 (10uF, 63V) by adding a 4.7 uF in parallel on the bottom side of the printed circuit board
(Vusu)

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Daewoo TV-Video Combi Model: GB14F7T1
Smoke came out of vents, then shut down
Small pin hole in line output transformer type FSA36012M
(Peter Evans)

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Telefunken TV Model: S5400DMD (ICC10 Chassis)
At switch on the Led Blinks 3 times, supply tries to come up with a Tick-Tick sound. After trying 4 times to come up it goes to error standby with Led blinking very fast. Error code 3
Make sure primary side of power supply is ok by desoldering jumper JL26, connect Pin 3 of IL01 (protection) to pin 4 ground. Bypass DP127. Put 100W/230V lamp on usys. Turn on the set the lamp should glow and pot PP120 should regulate it. I found CL007, CL015 and TL003 shorted
(Navneet)

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Grundig Video Model: GV400 / GV440
Display shows "locked" (sometimes Timer is blinking)
Cassette loading is at fault, replace loading gear complete
(Mrhard)

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Toshiba TV Model: 2857DB (C5SS Chassis)
Blue screen, no sound (ok on scart) or snow on screen, no sound, no service mode and menu text fluctuates, channels can not be tuned
The tuner was faulty
(Anonymous)

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Philips TV (L6 Series Chassis)
Vertical lines are not straight when picture is very bright or has white text content
Replace resistor 3420 in the beam current circuit (12k or 15k) replaced with an 18k
(Etienne)

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Ferguson</st1:City></ST1

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lace></st1:City> TV Model: C2566
Severe field cramp at bottom of the picture, but very stretched picture at the top
C608 (4.7uF, 63v.) in field stage o/c
(I.g.d.)

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Sony TV Model: KVM2511 (AE1 Chassis)
Can not switch on the set, supply ok
Suspect L807 of o/c (Pt no. 140750400) also check R008 and C017
(Anonymous)

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Sony TV Model: KV32S10
Relay clicks continuously at switch on
Replace Flyback
(Dan * dbs electronics)

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<st1:City w:st="on"><ST1

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

lace></st1:City> TV Model: C2117T
Goes straight to standby, after a quick burst of power
Replaced R952 (39K), had gone slightly high
(Mark t)

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Sharp TV Model: CV2123 (CS Chassis)
Field fault / general modification
Add a 1N4148 diode from the emitter of Q509 to cathode of D513 (cathode to emitter of Q509), Pt No. RH-DX0045BMZZ, change R534 to 390ohms (Pt No. VRS-TV1JD391J) and add a fuse in series with L607 and L608 (Pt No. QFS-J1023CEZZ)
(Anonymous)

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Multitech Video Model: VP-1600
Black screen on playback, no test signal
Resolder and clean test switch
(Spiros gr)

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<st1:City w:st="on"><ST1

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

lace></st1:City> TV Model: T14R (TX805 Chassis)
Dead, no standby led
RP41 (65k ohms) was o/c
(Brio)

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Crown TV Model: CT 2011
Crackling audio
Check for failure of IC101 (KA2914A) (TA7680AP equiv)
(Anonymous)

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Itt TV Model: ITT 3362 (Pico 2/ST3 Chassis)
Tv dies after running for a few seconds
Replace 4.7uF capacitor in the switching power supply unit!
(Handoyo)

عطية حسن محمود · 28-03-2006, 01:36 PM

اتمنى ان يستفيد جميع الاخوة الاعضاء بهذا الموضوع
وقريبا باذن الله ساقوم بعمل برنامج متكامل يحوى اكثر من 50000 عيب لمختلف الاجهزة فى العالم
ويحوى دوائر هذه الاجهزة والشرح الكامل لاساسيات الالكترونيات وقياسها مع تحليل العيوب
وغيرها الكثير حتى يستفيد منها المبتدء والمحترف حيث اننى فى الحقيقة مبرمج بلغة
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وللجميع الشكر
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