Grundig TV
Model: ST70-460 (CUC4635 Chassis)
Intermittent start up and tripping
Dry joint on R636, vertically mounted 4.7 ohm wirewound in sw mode circuit
Intermittent start up and tripping
Dry joint on R636, vertically mounted 4.7 ohm wirewound in sw mode circuit
Nei TV Model:
2031TX
No Power
R802 open circuit. Unknown device (poss. Thermistor). Replaced with 15K, 2Watt
No Power
R802 open circuit. Unknown device (poss. Thermistor). Replaced with 15K, 2Watt
Sony TV
Model: KV-2565MT (SCC-E64P Chassis)
Horizontal output transistor Q802 goes short repeatedly
C818 (1uF, 250v) had lost capacity, replaced C818 and Q802 and unit was ok
Horizontal output transistor Q802 goes short repeatedly
C818 (1uF, 250v) had lost capacity, replaced C818 and Q802 and unit was ok
Sony TV
Model: KVD-C21MF1 (SCC-K68A-A Chassis)
No sound and screen not appearing, B+ ok
No input on pin 5 of IC301 (MC44002P), R339 had failed, once replaced the unit was ok
No sound and screen not appearing, B+ ok
No input on pin 5 of IC301 (MC44002P), R339 had failed, once replaced the unit was ok
Bush TV
Model: 28ZKF
Set powers up but no sound and blank raster
RF10 o/c (33 ohm)
Set powers up but no sound and blank raster
RF10 o/c (33 ohm)
Panasonic TV
Model: CT20G12V
Dead
this was found to be due to the STR58041 chip
Dead
this was found to be due to the STR58041 chip
Philips TV
Model: GR2.4AA (GR2.4AA Chassis)
No picture, just black screen
Check R3414, an SMD chip on the CRT board. There could be invisible bad solder joints
No picture, just black screen
Check R3414, an SMD chip on the CRT board. There could be invisible bad solder joints
Panasonic
Video Model: NVJ40
Poor picture, may clear as unit warms up
Check C27 in the power supply secondary
Poor picture, may clear as unit warms up
Check C27 in the power supply secondary
Philips TV
Model: TX2112 (U5N Chassis)
Sound mutes for too long when changing stations (up to 30 secs)
The MAB8441-T005 was faulty (no longer available)
Sound mutes for too long when changing stations (up to 30 secs)
The MAB8441-T005 was faulty (no longer available)
Thorn Video
Model: VR414LVA
Dead, no functions, no display
Replacing CP19 (1000uF, 10v) in the PSU restored operation
Dead, no functions, no display
Replacing CP19 (1000uF, 10v) in the PSU restored operation
Goldstar
Video Model: P13I
Dead, no functions, no display
Replacing CP19 (1000uF, 10v) in the PSU restored operation
Dead, no functions, no display
Replacing CP19 (1000uF, 10v) in the PSU restored operation
Goldstar
Video Model: P13I
E-E in playback & dim display
CP25 (100uF, 10v) in PSU cured dim display. No need to dismantle whole deck. W152 was ok
E-E in playback & dim display
CP25 (100uF, 10v) in PSU cured dim display. No need to dismantle whole deck. W152 was ok
Thorn Video
Model: VR414LVA
E-E in playback & dim display
CP25 (100uF, 10v) in PSU cured dim display. No need to dismantle whole deck. W152 was ok
E-E in playback & dim display
CP25 (100uF, 10v) in PSU cured dim display. No need to dismantle whole deck. W152 was ok
Jvc Video
Model: HR-S4700EK
Intermittently crunches tapes on eject
I had to use a clear service cassette to see what was occuring during the eject sequence and found that during the unthread, the take up reel was rotating anti-clockwise and was not being braked, the felt pad on the take-up sub brake had fallen off the arm, a new brake cured the problem
Intermittently crunches tapes on eject
I had to use a clear service cassette to see what was occuring during the eject sequence and found that during the unthread, the take up reel was rotating anti-clockwise and was not being braked, the felt pad on the take-up sub brake had fallen off the arm, a new brake cured the problem
Firstline TV
Model: 1433GR
Chopper secondary voltage (115V) was way too high (around 220V)
C615, Q605, Q606 and R308 had all died, The value of C607 (47uF) was out of range. Note: This set is equivalent to the Princess GT-1412
Chopper secondary voltage (115V) was way too high (around 220V)
C615, Q605, Q606 and R308 had all died, The value of C607 (47uF) was out of range. Note: This set is equivalent to the Princess GT-1412
Sony TV
Model: KV-HF14M80 (BG-3S SSC-U21F Chassis)
Dead in standby mode, no primary voltages, led orange
Change MICOM CXP86449-627S
Dead in standby mode, no primary voltages, led orange
Change MICOM CXP86449-627S
Thomson TV
(ICC17 Chassis)
Picture lacking in contrast and brightness
The symptoms suggested a beam limiter fault, replacing transistor TL02 (BF422) which was found to be leaky produced excellent pictures
Picture lacking in contrast and brightness
The symptoms suggested a beam limiter fault, replacing transistor TL02 (BF422) which was found to be leaky produced excellent pictures
Philips TV
(L6.2 Chassis)
Power supply will not start up
Resistor 3506 (0.33 Ohms, 1w fusible) had failed, a replacement brought the set to life
Power supply will not start up
Resistor 3506 (0.33 Ohms, 1w fusible) had failed, a replacement brought the set to life
Schneider TV
Model: TV9
Line output transistor short circuit
Replacement did not clear the fault and the protection circuit was operating. C307 (0.047uF, 200V) was found to be o/c, when removed it had a bubble on the side, its part of a potential divider network (C306 & C307 in series, centre of which goes to the protect circuit), it is hard to get to being right by the line output transistor
Line output transistor short circuit
Replacement did not clear the fault and the protection circuit was operating. C307 (0.047uF, 200V) was found to be o/c, when removed it had a bubble on the side, its part of a potential divider network (C306 & C307 in series, centre of which goes to the protect circuit), it is hard to get to being right by the line output transistor
Beko TV
Model: 14.2
The +Ub voltage (+140V) was not present, fault in switching power supply
Transistor T601 (SK2545) had failed, replace/check resistor R602 (1Meg ohm) in switch control circuit, also if T601 is s/c the control chip TDA16846 will also be damaged
The +Ub voltage (+140V) was not present, fault in switching power supply
Transistor T601 (SK2545) had failed, replace/check resistor R602 (1Meg ohm) in switch control circuit, also if T601 is s/c the control chip TDA16846 will also be damaged
Sony TV
Model: KV25K5U (FE1/FE1A Chassis)
No sound or vision, front led flashing
Replaced line output transistor, re-soldered dry joints on driver transformer. Also check for any other poor joints in this section. Have used a 2SD1878 as replacement, This seems to work ok as the Sony original is very expensive
No sound or vision, front led flashing
Replaced line output transistor, re-soldered dry joints on driver transformer. Also check for any other poor joints in this section. Have used a 2SD1878 as replacement, This seems to work ok as the Sony original is very expensive
Sharp TV
Model: 6GF63H (DA-50W Chassis)
Noise from speakers / center speaker even with the volume set at minimum
Replace IC1300 (BA4558F 8pin smd) and IC1302 (TDA7480) which are both located on the central speaker amplifier plug-in PCB
Noise from speakers / center speaker even with the volume set at minimum
Replace IC1300 (BA4558F 8pin smd) and IC1302 (TDA7480) which are both located on the central speaker amplifier plug-in PCB
Jvc Video
Model: HRJ205
Dead, no negative voltages on psu connector
Check R32 (100 ohms) in psu for o/c
Dead, no negative voltages on psu connector
Check R32 (100 ohms) in psu for o/c
Normande
Spectra TV Model: 5207 (F11 Chassis)
Dead set, power supply ticking
R164 was found to be open circuit
Dead set, power supply ticking
R164 was found to be open circuit
Decca TV
Model: D28NT92S (PT92 Chassis)
Dead set, no stby led
Check RP06 (3.9meg), RP05 (1meg) and RP07 (15R) in psu
Dead set, no stby led
Check RP06 (3.9meg), RP05 (1meg) and RP07 (15R) in psu
Sanyo TV
Model: Spectra 2000
Picture had only wide screen effect
Found set on the street! beautiful little 14" TV, still looks like new, replaced 33uF, 160v cap in power circuit as it was bleeding its guts onto the pcb, has worked perfectly ever since
Picture had only wide screen effect
Found set on the street! beautiful little 14" TV, still looks like new, replaced 33uF, 160v cap in power circuit as it was bleeding its guts onto the pcb, has worked perfectly ever since
Teac TV
Model: CT-M685 (ONWA Chassis)
Set stays in standby intermittently or will int switch off to standby also brightness and contrast slightly low
Re-solder all joints in the power supply (very small dry joints that need a microscope to find !) also check / replace replace capacitors C109 and C110 and check condition of other psu caps.
Set stays in standby intermittently or will int switch off to standby also brightness and contrast slightly low
Re-solder all joints in the power supply (very small dry joints that need a microscope to find !) also check / replace replace capacitors C109 and C110 and check condition of other psu caps.
Panasonic
Video Model: NVJ30 (G-Deck)
Severe patterning of white streaks filling the screen in playback. E-E is ok
C1122 in the power supply unit. It is probably leaking its contents
Severe patterning of white streaks filling the screen in playback. E-E is ok
C1122 in the power supply unit. It is probably leaking its contents
Panasonic
Video Model: NV-366
Front buttons (Play, FF etc.) don't work
Caused by faulty remote control jack socket - this machine uses a wired remote
Front buttons (Play, FF etc.) don't work
Caused by faulty remote control jack socket - this machine uses a wired remote
Matsui TV
Model: 1420T
Dead set, P.S.U. not firing up
Resistor R511 (1.8M) open circuit
Dead set, P.S.U. not firing up
Resistor R511 (1.8M) open circuit
Salora TV(J
Chassis)
Start up problems
Replace CB712 and CB726 in the power supply. Both are same value (4.7uF, 50V)
Start up problems
Replace CB712 and CB726 in the power supply. Both are same value (4.7uF, 50V)
Goldstar TV
Model: 20A80
No picture, FR406 ok
Check the video output amplifier stage for failure
No picture, FR406 ok
Check the video output amplifier stage for failure
Panasonic
Video Model: NV870 (D1 Mechanism)
Noisy FM audio
Add a 0.01uF 50v ceramic capacitor between pin 9 of IC4509 and ground (only applies to units with serial numbers prior to D5K)
Noisy FM audio
Add a 0.01uF 50v ceramic capacitor between pin 9 of IC4509 and ground (only applies to units with serial numbers prior to D5K)
Panasonic
Video Model: NV870 (D1 Mechanism)
Mode switch chatters
If it still does this with a new mode switch, check the serial number. If it's prior to numbers beginning A5K... then add a 560 ohm resistor and a 50v 0.68uF electrolytic capacitor in series, between pin 2 of IC6002 and ground.
Mode switch chatters
If it still does this with a new mode switch, check the serial number. If it's prior to numbers beginning A5K... then add a 560 ohm resistor and a 50v 0.68uF electrolytic capacitor in series, between pin 2 of IC6002 and ground.
Panasonic
Video Model: NVF70
No sound via SCART socket
Fit R4908 and R4910 on input/output pack, as they may be missing ! (Both 47 ohm)
No sound via SCART socket
Fit R4908 and R4910 on input/output pack, as they may be missing ! (Both 47 ohm)
Panasonic
Video Model: NV730B (D1 Mechanism)
Video heads wear very quickly
Check the back tension if you haven't done so already - it was set too high when manufactured.
Video heads wear very quickly
Check the back tension if you haven't done so already - it was set too high when manufactured.
Sony TV
Model: KV2020
Picture is folded over at the top and curled at the top left hand side
Replace C559 and C560
Picture is folded over at the top and curled at the top left hand side
Replace C559 and C560
Sony TV
Model: KV1412
Noisy picture
Replace relay RY481 on S2 board
Noisy picture
Replace relay RY481 on S2 board
Sony TV
Model: KV1412
Vertical line at the left of the picture
Replace L506 on A board, replacement part number 1-407-366-00
Vertical line at the left of the picture
Replace L506 on A board, replacement part number 1-407-366-00
Sony TV
Model: KV1412
Set reverts to standby mode when switched on, because IC003 does not reset correctly
Replace IC003 on A board, IC type CX523013P
Set reverts to standby mode when switched on, because IC003 does not reset correctly
Replace IC003 on A board, IC type CX523013P
Medion TV
Model: MD7103VTS (11AK18 Chassis)
Power LED and Sound OK. EHT Voltage for 1 Second after switching on via Remote Control
Replace vertical deflection circuit IC605 (TDA8361) - don’t forget to apply Heat transfer compound.
Power LED and Sound OK. EHT Voltage for 1 Second after switching on via Remote Control
Replace vertical deflection circuit IC605 (TDA8361) - don’t forget to apply Heat transfer compound.
Sony TV
Model: KV28WS3 (AE3 Chassis)
No sound or picture, in protection after 2 seconds
No 6.5 Volt on G-board. Fuse resistor PS605 is broken on G-board. Cause: bad contacts
No sound or picture, in protection after 2 seconds
No 6.5 Volt on G-board. Fuse resistor PS605 is broken on G-board. Cause: bad contacts
Philips TV
(ANUBIS A-AC Chassis)
Low 95v rail, (35v)
C2530 open circuit completely
Low 95v rail, (35v)
C2530 open circuit completely
Panasonic TV
Model: TX28W3 (EURO 1 Chassis)
At switch on a strange sound comes and goes for a few seconds, no sound and vision
Check R622, Q624 and T639
At switch on a strange sound comes and goes for a few seconds, no sound and vision
Check R622, Q624 and T639
Grundig TV
(CUC5310 Chassis)
Dead, no shorts found
Look for dry joints on the scan coil plug (may not be visible) also re-solder the 12v and 5v regs
Dead, no shorts found
Look for dry joints on the scan coil plug (may not be visible) also re-solder the 12v and 5v regs
Sony TV
Model: KV21GMR1 MkII
No raster, fly back squeaking
Check the damper diode, in my case it was leaky, also check the electrolytic capacitor connected from the collector of the pin out trans.
No raster, fly back squeaking
Check the damper diode, in my case it was leaky, also check the electrolytic capacitor connected from the collector of the pin out trans.
Rca TV Model:
F19220BK (CTC175L2 Chassis)
Erratic screen / intermittent, eprom causes multiple possible symptoms, clicks on/off, tuner, you name it !
Mass defect caused by bad solder in tuner, once fixed will probably last forever. Re-solder tuner wrap-around groundings and all pins under tuner shield (bottom), if no success suspect a corrupted eprom
Erratic screen / intermittent, eprom causes multiple possible symptoms, clicks on/off, tuner, you name it !
Mass defect caused by bad solder in tuner, once fixed will probably last forever. Re-solder tuner wrap-around groundings and all pins under tuner shield (bottom), if no success suspect a corrupted eprom
Sony TV
Model: KV20TS20
Snowy or intermittent picture, makes popping sound
Solder all coils in stand up board and tuner
Snowy or intermittent picture, makes popping sound
Solder all coils in stand up board and tuner
Philips TV
(A10E Chassis)
Randomly switching to scart input when the programme output from the tuner should be displayed
This is now becoming a common problem, the cause being the painter chip IC7064 which is located on the small signals panel, there are 8 different versions but only 3 common versions
Randomly switching to scart input when the programme output from the tuner should be displayed
This is now becoming a common problem, the cause being the painter chip IC7064 which is located on the small signals panel, there are 8 different versions but only 3 common versions
Schneider TV
Model: DTV2
shuts off after 20 minutes or so
Dry joint on FBT
shuts off after 20 minutes or so
Dry joint on FBT
Sony TV
Model: KV-M21TU (AE1 Chassis)
Intermittent rolling and loss of luminance, improves as set warms up
Dry joints on tuner / IF board
Intermittent rolling and loss of luminance, improves as set warms up
Dry joints on tuner / IF board
Sony TV
Model: KV-21FS100 (BA6 Chassis)
No power, R640 open
Change R640, IC600 and associated electrolytic capacitor
No power, R640 open
Change R640, IC600 and associated electrolytic capacitor
Philips
TV-Vid Combo Model: Televideo
No vcr transport functions via remote
This is the symptom when the remote control has switched from the correct VCR1 mode to the VCR2 mode (usually due to low battery voltage or the batteries being replaced), to rectify the situation hold both the stop button and button 1 together for 5 seconds, alternatively for different remote versions holding the stop button and button 2 together for 5 seconds will rectify the problem
No vcr transport functions via remote
This is the symptom when the remote control has switched from the correct VCR1 mode to the VCR2 mode (usually due to low battery voltage or the batteries being replaced), to rectify the situation hold both the stop button and button 1 together for 5 seconds, alternatively for different remote versions holding the stop button and button 2 together for 5 seconds will rectify the problem
Toshiba TV
Model: CF3060K
Problems with screen size
Look out for 2 x 2.2uF electrolytic (sometimes red in color)
Problems with screen size
Look out for 2 x 2.2uF electrolytic (sometimes red in color)
Daewoo TV-Vid
Combi Model: DVT-1482P (CP310 Chassis)
Totally dead except for a few rapid flashes from the green led at switch on
C811 a 100uF, 16v capacitor in the power supply was the cause, it is located next to the chopper transistor heat sink. This is the same TV/Video as the Goodmans TVC14VP
Totally dead except for a few rapid flashes from the green led at switch on
C811 a 100uF, 16v capacitor in the power supply was the cause, it is located next to the chopper transistor heat sink. This is the same TV/Video as the Goodmans TVC14VP
Panasonic
Video Model: NV-HD675 (Z-Mech Chassis)
Intermittently shutting down with HO1 in display
Problem can be caused by stator board VEK9017 but in this case the problem was the upper drum assy! The bearings seize up when warm!
Intermittently shutting down with HO1 in display
Problem can be caused by stator board VEK9017 but in this case the problem was the upper drum assy! The bearings seize up when warm!
Sanyo TV
Model: CEP3011V-30 (A1-B14 Chassis)
After switching on, no longer able to switch-off with remote control, standby light comes on with sound muted. (Original remote control: RM-700)
Opto-coupler PC113 faulty
After switching on, no longer able to switch-off with remote control, standby light comes on with sound muted. (Original remote control: RM-700)
Opto-coupler PC113 faulty
Ge TV Model:
PTK195AA (PTK195 Chassis)
Works fine for 10 or 15 min. (or sometimes 1 or 2 days) then bows from top and loses convergence
Replace the STK730-130, located on small board above the convergence module
Works fine for 10 or 15 min. (or sometimes 1 or 2 days) then bows from top and loses convergence
Replace the STK730-130, located on small board above the convergence module
Lenco TV
Model: 14P1MNA
Standby only
Check R101 (4.7ohm), TR102 (C6180) and C126 (47uF, 16V)
Standby only
Check R101 (4.7ohm), TR102 (C6180) and C126 (47uF, 16V)
Sony TV
Model: KV-M1400 (BE2A Chassis)
Insufficient vertical deflection. Line rolling on top of picture
Replace ceramic capacitor C524
Insufficient vertical deflection. Line rolling on top of picture
Replace ceramic capacitor C524
Tandberg /
Seleco / Sinudyne TV Model: 3TS645 (PC170 Chassis)
No vertical scan, just one bright line in the middle
Suspect R235 (18kohm), in some cases the TDA3654 may also have failed
No vertical scan, just one bright line in the middle
Suspect R235 (18kohm), in some cases the TDA3654 may also have failed
Grundig TV
Model: M70-490/9 TEXT (CUC3800 Chassis)
No sound, picture ok
When shifting up the channel frequency using the fine tuning, a very weak sound could be heard. Replaced the sound IF demodulator chip U2829B(IC2110)
No sound, picture ok
When shifting up the channel frequency using the fine tuning, a very weak sound could be heard. Replaced the sound IF demodulator chip U2829B(IC2110)
Sanyo TV
Model: CEP2190M
No sound
IC901 (TDA4935) blown due to excessive supply voltage, capacitors C619, C623, C810, C600, C601, C859 defective. Also verify R822
No sound
IC901 (TDA4935) blown due to excessive supply voltage, capacitors C619, C623, C810, C600, C601, C859 defective. Also verify R822
Jvc TV Model:
AV25S1EK
Field collapse
Re-solder TDA3654 as joints appear good but on application of soldering iron show to be dry
Field collapse
Re-solder TDA3654 as joints appear good but on application of soldering iron show to be dry
Mitsubishi TV
Model: CS40503
sometimes will not power up, missing 15 volt standby
Replaced D982 and C982, both leaky
sometimes will not power up, missing 15 volt standby
Replaced D982 and C982, both leaky
Sony TV
Model: KV24FS100
Will not power, led blinking
check R640 (1K 1/4w) if open replace ic600 (8-759-670-30)
Will not power, led blinking
check R640 (1K 1/4w) if open replace ic600 (8-759-670-30)
Schneider TV
Model: STV630UK
Only half a screen of frame scan
Replace IC401 (TDA8177F). If any blanking problems occur after chip replacement, check R327 (1 ohm) next to IC401
Only half a screen of frame scan
Replace IC401 (TDA8177F). If any blanking problems occur after chip replacement, check R327 (1 ohm) next to IC401
Sharp TV
Model: DV6632H (4BS-C Chassis)
Led changes from green to red, fails to start up, no EHT but secondary voltages in psu ok (150V ok)
Check Q601 and Q606, these are Q600 LOPT drivers, there should be 2V P-P on base of Q606 and 150V on collector of Q601, replace Q606 with a BC182 (check pinout)
Led changes from green to red, fails to start up, no EHT but secondary voltages in psu ok (150V ok)
Check Q601 and Q606, these are Q600 LOPT drivers, there should be 2V P-P on base of Q606 and 150V on collector of Q601, replace Q606 with a BC182 (check pinout)
Matsui TV
Model: 25M3
Failure to start up, led pulses
Check for dry joints on R541 and D436 located next to L.O.P.T
Failure to start up, led pulses
Check for dry joints on R541 and D436 located next to L.O.P.T
Proline TV
Model: 28N1 (F19 Chassis)
Procedure to invoke service mode
I have used this method and it works (supplied from the makers manual). With tv off, hold vol up button on tv, switch tv on and keep holding vol up button whilst pressing standby on remote (this must be done within 4 secs of switch on) at no time let vol go
Procedure to invoke service mode
I have used this method and it works (supplied from the makers manual). With tv off, hold vol up button on tv, switch tv on and keep holding vol up button whilst pressing standby on remote (this must be done within 4 secs of switch on) at no time let vol go
Sharp TV
Model: DV7045SN
No vertical deflection
R615 open (0.13 ohm 1/2W). Also re-soldered many bad solder joints
No vertical deflection
R615 open (0.13 ohm 1/2W). Also re-soldered many bad solder joints
Jvc Video
Model: HRD750
Tracking does not lock. Picture runs up and down occasionally
(Very) Small electrolytic caps on the drum circuit board must changed (They may be the bigger can type, if you don't find small ones)
Tracking does not lock. Picture runs up and down occasionally
(Very) Small electrolytic caps on the drum circuit board must changed (They may be the bigger can type, if you don't find small ones)
Toshiba TV
Model: 175T9B
Line tearing and incorrect field lock when cold
47uF electrolytic AGC decoupling capacitor inside tuner/if unit
Line tearing and incorrect field lock when cold
47uF electrolytic AGC decoupling capacitor inside tuner/if unit
Philips
TV-Vid Combi Model: 14TVCR240
Poor tape transport, tape is crumpled, upper or lower side gets rippled
Replace the capstan roller, if the tape transport is still not smooth check the guidepole (between the audio/control head and the capstan), tape must touch border-ring. Adjust the audio head position (screws marked A and T)
Poor tape transport, tape is crumpled, upper or lower side gets rippled
Replace the capstan roller, if the tape transport is still not smooth check the guidepole (between the audio/control head and the capstan), tape must touch border-ring. Adjust the audio head position (screws marked A and T)
Bluesky TV
Model: TDX-70 (11AK19 Chassis)
HT low / missing
Q608 (BU2508) dead (short-circuited). Needed replacement. That's all...
HT low / missing
Q608 (BU2508) dead (short-circuited). Needed replacement. That's all...
Panasonic TV
Model: TC2195DRS (Z3T Chassis)
SMPS noise. Low volt and high current on Usyst, no screen or sound
FBT TLF15606F
SMPS noise. Low volt and high current on Usyst, no screen or sound
FBT TLF15606F
Irradio TV
Model: MC-FBC-006
Dead, i.c. oscillating (may start if i.c. heated)
Check / replace R602 (2.2M, 1/2w)
Dead, i.c. oscillating (may start if i.c. heated)
Check / replace R602 (2.2M, 1/2w)
Sony TV (FE-1
Chassis)
Procedure to return EEPROM to factory default settings
Select programme 59, enter the service mode and at the TT-- prompt enter 49 then 24 (for UK)and 08 then switch off at the mains
(Anonymous)
Procedure to return EEPROM to factory default settings
Select programme 59, enter the service mode and at the TT-- prompt enter 49 then 24 (for UK)and 08 then switch off at the mains
(Anonymous)
Sony TV (FE-1
Chassis)
Main p.s.u starts up then almost immediately shuts down
This was due to IC603 (SE135N) being faulty
Main p.s.u starts up then almost immediately shuts down
This was due to IC603 (SE135N) being faulty
Sony TV
Model: KV-E2543E
Set goes to V protection mode (led flashes 13 times)
Check if there is saw signal at STV8379. If there is no signal, suspect dj in connector links between both motherboards, especially the one very close to plastic frame
Set goes to V protection mode (led flashes 13 times)
Check if there is saw signal at STV8379. If there is no signal, suspect dj in connector links between both motherboards, especially the one very close to plastic frame
Toshiba TV
Model: 2505DB
Stretched frame or frame collapse
Replace modification diode 570 on copper side
Stretched frame or frame collapse
Replace modification diode 570 on copper side
Hitachi TV
Model: C2846TN (311 Chassis)
Frame collapse or dotted line
Check and replace frame ic (TA8427K) or check R710 for open circuit, also check for possible dry joints on D601
Frame collapse or dotted line
Check and replace frame ic (TA8427K) or check R710 for open circuit, also check for possible dry joints on D601
Sony TV
Model: KV-A2923
Set starts, horizontal and vertical deflection work, HT ok, crt heaters ok, but no sound or picture
I turned the G2 voltage up and noticed a white screen with flyback lines, frame ok. I detected two badly soldered double diode rectifiers in the secondary part of the power supply. I checked all other joints, and everything was ok, success
Set starts, horizontal and vertical deflection work, HT ok, crt heaters ok, but no sound or picture
I turned the G2 voltage up and noticed a white screen with flyback lines, frame ok. I detected two badly soldered double diode rectifiers in the secondary part of the power supply. I checked all other joints, and everything was ok, success
Hitachi TV
Model: C1714T
Frame collapse, causing set to go dead, also can cause the regulator transistor, to go s/c. BUT12AF. H.T. unstable
Check R951 (39K) goes high, in this case 65K, causing HT to go high
Frame collapse, causing set to go dead, also can cause the regulator transistor, to go s/c. BUT12AF. H.T. unstable
Check R951 (39K) goes high, in this case 65K, causing HT to go high
Philips TV
(GR2.1 AA Chassis)
Poor picture quality from CVBS EXT1 and EXT3. Low intensity high saturation. Loss of sync. Shock and temp dependent
Dry joints on SMD resistors 3014 and 3019 on IF/Sound module other side of encapsulated TDA2549
Poor picture quality from CVBS EXT1 and EXT3. Low intensity high saturation. Loss of sync. Shock and temp dependent
Dry joints on SMD resistors 3014 and 3019 on IF/Sound module other side of encapsulated TDA2549
Sony TV
Model: KV-A2923
Standby led blinks slowly, a few times, chassis won't start up
I changed the vertical deflection ic type TDA8170 and I measured two leaky capacitors in the power supply. Better to change all 4 capacitors in the power unit, everything was then ok.
Standby led blinks slowly, a few times, chassis won't start up
I changed the vertical deflection ic type TDA8170 and I measured two leaky capacitors in the power supply. Better to change all 4 capacitors in the power unit, everything was then ok.
Sony TV
Model: KV21M1D
Picture disappears a moment after changing program. Raster/OSD ok
Replace TDA9806 ic
Picture disappears a moment after changing program. Raster/OSD ok
Replace TDA9806 ic
Goldstar TV
Model: CBT-9745 (PC91A Chassis)
Attempts to start up. When main switch is pushed ON, relay coupling and decoupling (on-off, on-off)
Replace: C805 (47uF, 50V) next to the TDA4605 and C801 (1uF, 50V)
Attempts to start up. When main switch is pushed ON, relay coupling and decoupling (on-off, on-off)
Replace: C805 (47uF, 50V) next to the TDA4605 and C801 (1uF, 50V)
Goldstar TV
Model: CBT-9745 (PC91A Chassis)
TV dead. PSU ok, led lit. When button pushed on remote the LED goes out but set does not start (Missing HF voltage)
Replace: C417 (1uF, 250V) Elko for HF oscill. (next to HF trafo)
TV dead. PSU ok, led lit. When button pushed on remote the LED goes out but set does not start (Missing HF voltage)
Replace: C417 (1uF, 250V) Elko for HF oscill. (next to HF trafo)
Philips TV
(FL1.1AA Chassis)
Int shutdown with lights flashing
Check the 18v zener D6376
Int shutdown with lights flashing
Check the 18v zener D6376
Philips TV
Model: 20PV164-05
Vertical frame collapse
Change vertical output drive IC and nearby electrolytic capacitor
Vertical frame collapse
Change vertical output drive IC and nearby electrolytic capacitor
Nokia TV (FX
Chassis)
Left part of picture missing after fitting vertical modification kit
Make sure you have fitted the extra capacitor between pins 8 and 9, instead of 10 and 9. Fitting incorrectly will destroy the sandcastle pulse and make the picture appear strange
Left part of picture missing after fitting vertical modification kit
Make sure you have fitted the extra capacitor between pins 8 and 9, instead of 10 and 9. Fitting incorrectly will destroy the sandcastle pulse and make the picture appear strange
Nei TV (CE25
Chassis)
Dead - PSU clicking
Dry joints on D116 and C131 causing blown BU508A
Dead - PSU clicking
Dry joints on D116 and C131 causing blown BU508A
Grundig TV
(CUC5310 Chassis)
Picture int disappears leaving snow on screen
Resolder the Xtal in the tuner
Picture int disappears leaving snow on screen
Resolder the Xtal in the tuner
Schneider TV
Model: STV630UK
Frame Collapse
Replace IC401 (TDA8177F) and resistors R325, R326, R327
Frame Collapse
Replace IC401 (TDA8177F) and resistors R325, R326, R327
Matsui TV-Vid
Combi Model: TVR185
Int sound
Check voltage on sound IC, if it drops with high volume change C620 (1000uF, 25 vdc)
Int sound
Check voltage on sound IC, if it drops with high volume change C620 (1000uF, 25 vdc)
Sharp TV
Model: 66GF-63H
Blank grey raster with fly back lines, sound present and ok
Check pin 2 on connector H on tube base for 12V if high then check Q912 (BC337) for o/c
Blank grey raster with fly back lines, sound present and ok
Check pin 2 on connector H on tube base for 12V if high then check Q912 (BC337) for o/c
Sony TV
Model: KF60XBR800
No picture no sound timer light flash 44 fast 45 then 5 times then 5 times
Replace power block part # 1-468-510-11
No picture no sound timer light flash 44 fast 45 then 5 times then 5 times
Replace power block part # 1-468-510-11
Toshiba TV
Model: 198X6M
Horizontal output continues to short
Check capacitors C403 and C408 (both 50v) these two caps tend to change capacitance
Horizontal output continues to short
Check capacitors C403 and C408 (both 50v) these two caps tend to change capacitance
Philips TV
Model: 28PW6005 (A10 Chassis)
Changes to ext 1 when watching tv (ok with video input)
Painter ic IC7064 failed on the ssb (small signals board)
Changes to ext 1 when watching tv (ok with video input)
Painter ic IC7064 failed on the ssb (small signals board)
Philips Video
Model: Turbo Deck
Chews tapes and poor tracking
Fit new pinch roller
Chews tapes and poor tracking
Fit new pinch roller
Thomson TV
Model: RP46
East-west and north-south bowing. Really bad convergence
The extra power supply is not working. Check R18 on primary side. It should read 220k Ohm
East-west and north-south bowing. Really bad convergence
The extra power supply is not working. Check R18 on primary side. It should read 220k Ohm
B and O TV
Model: LX5500
Sound disappears from time to time
If there is sound all the time via scart, but problem with both mono and stereo via tuner, check R137. It is a 4k7 pot on the tuner board
Sound disappears from time to time
If there is sound all the time via scart, but problem with both mono and stereo via tuner, check R137. It is a 4k7 pot on the tuner board
Rca TV Model:
F27442 (CTC203AD5 Chassis)
No power, all standby voltages ok
Replace the guide plus. is located to the side of the tuner
No power, all standby voltages ok
Replace the guide plus. is located to the side of the tuner
Bush TV
Model: 2071NTX (11AK19 Chassis)
Black screen from tuner but OSD (menus and channel no.), teletext and sound work normally
Q500 and Q504 blown, replacement cured fault. Removing R508 also restored picture. Fault puts TDA8840 in RGB insertion mode continuously, so separated RGB input might still work
Black screen from tuner but OSD (menus and channel no.), teletext and sound work normally
Q500 and Q504 blown, replacement cured fault. Removing R508 also restored picture. Fault puts TDA8840 in RGB insertion mode continuously, so separated RGB input might still work
Magnavox TV
Model: RP2781 C101 (27X105-00AA Chassis)
No vertical deflection
If resistor R445 (1 ohm) has gone open circuit this may cause IC550 (LA783x) to also fail. Replaced both IC550 and R445
No vertical deflection
If resistor R445 (1 ohm) has gone open circuit this may cause IC550 (LA783x) to also fail. Replaced both IC550 and R445
Sony TV (FE-1
Chassis)
Procedure to display past error codes and the number of times they have occured (particularly useful for ongoing intermittent faults)
Enter the standby mode then press the on-screen display button (i+), 5, volume down, and finally the tv button. Note: the error count can be reset by pressing 8 then 0 on the remote control
Procedure to display past error codes and the number of times they have occured (particularly useful for ongoing intermittent faults)
Enter the standby mode then press the on-screen display button (i+), 5, volume down, and finally the tv button. Note: the error count can be reset by pressing 8 then 0 on the remote control
Sony TV (FE-1
Chassis)
Intermittently displays bright red/green/blue raster then shuts down with led flashing 2, 4 or 5 times
Amazingly this was due to the CRT being faulty !
Intermittently displays bright red/green/blue raster then shuts down with led flashing 2, 4 or 5 times
Amazingly this was due to the CRT being faulty !
Philips TV
Model: 33SL5796/16B (FL 1.0 Chassis)
Snowy picture specially in VHF band. After about 5 minutes, picture snowy in all bands. About 10 minutes after switching on, no picture nor sound, just snow on the screen.
replaced the TUNER/IF. Original code was FQ816ME which is no longer in production. Replacement code is FQ916DME
Snowy picture specially in VHF band. After about 5 minutes, picture snowy in all bands. About 10 minutes after switching on, no picture nor sound, just snow on the screen.
replaced the TUNER/IF. Original code was FQ816ME which is no longer in production. Replacement code is FQ916DME
Sony TV
Model: KV-21RXR1
Excessive brightness/ brightness control reverses its function
When setting brightness to minimum the pic became very bright, setting to maximum the picture became dark ! Found that R301 (270k ohms) near the jungle IC was o/c
Excessive brightness/ brightness control reverses its function
When setting brightness to minimum the pic became very bright, setting to maximum the picture became dark ! Found that R301 (270k ohms) near the jungle IC was o/c
Philips Video
Model: VR6448 (20921 Chassis)
Mechanism jammed, some posts hard to turn
Grease has turned into cement!! Oil most of the moving parts, and move them to ensure oil penetrates
Mechanism jammed, some posts hard to turn
Grease has turned into cement!! Oil most of the moving parts, and move them to ensure oil penetrates
Universum TV
(11AK19 Chassis)
Narrow Picture
After re-soldering joints in the line output stage, check R629 (27 ohms, 1/2w) safety resistor to E/W FET, also o/c capacitor C630 (0.47, 250 volts). According to the schematic R629 is 2.7 ohms
Narrow Picture
After re-soldering joints in the line output stage, check R629 (27 ohms, 1/2w) safety resistor to E/W FET, also o/c capacitor C630 (0.47, 250 volts). According to the schematic R629 is 2.7 ohms
Philips TV
Model: 14PV220 (EPSILON 2001 Chassis)
Dead (Totally)
SMPS Chopper IC 7310 (MC44608 P75). I had no output from pin 5 with start up voltage pin 8 OK at 290V. If start up missing check start up resistor 3335 (1K). The only source I found for IC 7310 was Philips direct, part number 9322-143-51682
Dead (Totally)
SMPS Chopper IC 7310 (MC44608 P75). I had no output from pin 5 with start up voltage pin 8 OK at 290V. If start up missing check start up resistor 3335 (1K). The only source I found for IC 7310 was Philips direct, part number 9322-143-51682
Philips TV
Model: 21GR2751 (G90B Chassis)
Stereo set with no sound off air, maximum volume produces low hiss, some sound possible if station is detuned slightly. Sound via SCART is ok
Replace IC U2829B on audio panel
Stereo set with no sound off air, maximum volume produces low hiss, some sound possible if station is detuned slightly. Sound via SCART is ok
Replace IC U2829B on audio panel
Nordmende TV
Model: GALAXY 55 (ICC8 Chassis)
Dull picture
Replace (TT33) on tube base
Dull picture
Replace (TT33) on tube base
Nordmende TV
Model: GALAXY 55 (ICC8 Chassis)
Not tuning into channel
33v missing (RH040) o/c
Not tuning into channel
33v missing (RH040) o/c
Telefunken TV
Model: PALCOLOR F531 (ICC9 Chassis)
Stand-by led flash but set does not start
Replace: TL19 (BUH517), DL21 and DL22, CL21 and CL22
Stand-by led flash but set does not start
Replace: TL19 (BUH517), DL21 and DL22, CL21 and CL22
Orion TV
Model: TV2501B
Dead set or will start up and shut down
IRD shorted or leaky
Dead set or will start up and shut down
IRD shorted or leaky
Sony TV
Model: KV2062
Dark picture, No brightness control
1000V+ Missing caused by open circuit IK resistor Near to FBT
Dark picture, No brightness control
1000V+ Missing caused by open circuit IK resistor Near to FBT
Sony TV
Model: KVFX29 (FX Chassis)
White horizontal line (no vertical deflection)
Check / replace R548, R549
White horizontal line (no vertical deflection)
Check / replace R548, R549
Goldstar TV
Model: CB20A86
Dead, F801 blown
Check short circuit PTC coil (Degauss) short Diode on main Cap+ Check for failure of regulator IC801 (STR5707), Also check H.output D1651 for short circuit
Dead, F801 blown
Check short circuit PTC coil (Degauss) short Diode on main Cap+ Check for failure of regulator IC801 (STR5707), Also check H.output D1651 for short circuit
Toshiba TV
Model: 32ZD09G (C00S Chassis)
Procedure to enter the service mode
Press the mute key on the handset once, then press the mute key for a second time but hold it down while also pressing the menu button on the set
Procedure to enter the service mode
Press the mute key on the handset once, then press the mute key for a second time but hold it down while also pressing the menu button on the set
Schaub Lorenz
TV Model: DS2 (DTV2 Chassis)
Procedure to enter service mode
Press and hold service button on PCB inside TV. Press `C` on remote. Press program no. where your test picture is, You are now in service mode
Procedure to enter service mode
Press and hold service button on PCB inside TV. Press `C` on remote. Press program no. where your test picture is, You are now in service mode
Akai Video
Model: VSG2DPL
Tape loading carriage is very loose and sloppy will not load and eject tape properly
Mode switch is faulty, out of alignment or has a bad connection back to the PCB. This switch is located underneath the tape drive mechanism
Tape loading carriage is very loose and sloppy will not load and eject tape properly
Mode switch is faulty, out of alignment or has a bad connection back to the PCB. This switch is located underneath the tape drive mechanism
Samsung TV
Model: CB7230WT
Power supply flutters and standby light dims out
Replace mains filter capacitor (220uF 400v), also make sure the 4 capacitors in the primary are replaced (if they haven't already been)
Power supply flutters and standby light dims out
Replace mains filter capacitor (220uF 400v), also make sure the 4 capacitors in the primary are replaced (if they haven't already been)
Samsung TV
Model: CB7230WT
Vertical failure (common fault)
The reason for the failure is because the yoke is low impedance. The TDA3654Q i.c. has been designed to handle 12 ohms and over. Heat is the reason it destroys itself, the best cure is to place a small cpu fan on the heatsink
Vertical failure (common fault)
The reason for the failure is because the yoke is low impedance. The TDA3654Q i.c. has been designed to handle 12 ohms and over. Heat is the reason it destroys itself, the best cure is to place a small cpu fan on the heatsink
Philips TV
Model: 29FL1770 or 25FL1760 (FL1.0 Chassis)
After replacing the line output transformer, the following symptom was displayed. Display flashing standby light and stereo II
Short s23 and s24 briefly, which will put the set into service mode. Option 1 should read 010 this applies only to the 25FL and 29FL. Option 2 should be 001 for sets with text and 004 for sets without text
After replacing the line output transformer, the following symptom was displayed. Display flashing standby light and stereo II
Short s23 and s24 briefly, which will put the set into service mode. Option 1 should read 010 this applies only to the 25FL and 29FL. Option 2 should be 001 for sets with text and 004 for sets without text
Jvc TV Model:
AV28WZ2
Blank raster
Replace defective TDA6111Q for Red, Blue and green
Blank raster
Replace defective TDA6111Q for Red, Blue and green
Thomson TV
Model: 28VK-44E
No start-up when cold, warm OK
Changes CP198 (47uF, 16v). Secondary Power supply
No start-up when cold, warm OK
Changes CP198 (47uF, 16v). Secondary Power supply
Philips TV
Model: 14PV184
Dead set / blown fuse
Replace D6313, 6314, 6315, 6316 and R3337 (2R, 5W)
Dead set / blown fuse
Replace D6313, 6314, 6315, 6316 and R3337 (2R, 5W)
Panasonic TV
Model: TX21AD2DP
Stuck in standby but tripping, not the usual nvm problem and nothing s/c
Check and replace C804 (1uF, 25V), C806, C807 (100uF/50V) in supply. Use 105 degrees cap. types
(Rob's TV-service - Holland)
Stuck in standby but tripping, not the usual nvm problem and nothing s/c
Check and replace C804 (1uF, 25V), C806, C807 (100uF/50V) in supply. Use 105 degrees cap. types
(Rob's TV-service - Holland)
Philips TV
Model: 25FL1760 (FL1 Chassis)
Set tries to go to stereo as indicated by the on screen display, but most of the time it is stuck in mono, when in stereo the right channel was hissing
Replace the TDA8415 on the stereo decoder board, confirm this buy putting multimeter on pin 7 and 8, they should have a voltage of 3.2 volts
Set tries to go to stereo as indicated by the on screen display, but most of the time it is stuck in mono, when in stereo the right channel was hissing
Replace the TDA8415 on the stereo decoder board, confirm this buy putting multimeter on pin 7 and 8, they should have a voltage of 3.2 volts
Philips TV
Model: 29FL1770 or 25FL1760 (FL1 Chassis)
No pictures or sound
Disconnect the P1 and P2 plugs on the right hand side board. L.o.p.t. side. If the set now starts up then change all sound output IC's
No pictures or sound
Disconnect the P1 and P2 plugs on the right hand side board. L.o.p.t. side. If the set now starts up then change all sound output IC's
Philips TV
Model: 29FL1770 or 25FL1760 (FL1 Chassis)
When selecting a channel it locks in initially but will then go off tune (as if the voltage tuning had varied)
Replaced the TDA i.c. in the tuner i.f. section. (tried the capacitors first of course).
When selecting a channel it locks in initially but will then go off tune (as if the voltage tuning had varied)
Replaced the TDA i.c. in the tuner i.f. section. (tried the capacitors first of course).
Philips TV
Model: 29FL1770 or 25FL1760 (FL1.0 Chassis)
Lights flashing at the front, if carefully interpreted they point to the primary of the power supply
Replaced 2SB 3795B chopper transistor, heated the heatsink with a hair dryer and it started right up, weird as the transistor was reading fine
Lights flashing at the front, if carefully interpreted they point to the primary of the power supply
Replaced 2SB 3795B chopper transistor, heated the heatsink with a hair dryer and it started right up, weird as the transistor was reading fine
Decca TV
Model: D20RDE6 (D Series Chassis)
No luminance(looks negative picture)
We spent over 2 hours on this set and in the end we swapped the chassis with a scrap chassis and the fault remained ! It turned out the fault was with the CRT
No luminance(looks negative picture)
We spent over 2 hours on this set and in the end we swapped the chassis with a scrap chassis and the fault remained ! It turned out the fault was with the CRT
Samsung TV
Model: 20A5
Partial field collapse
Check IC301 (TDA8350Q) and the 2 associated unmarked capacitors (10uF and 100uF, 63v) and the 10 ohms,5w ceramic resistor across pins 3/5 of the above chip
Partial field collapse
Check IC301 (TDA8350Q) and the 2 associated unmarked capacitors (10uF and 100uF, 63v) and the 10 ohms,5w ceramic resistor across pins 3/5 of the above chip
Sylvania TV
Model: SRT2127ST
TV will not start up, fuses ok
Change IC601
TV will not start up, fuses ok
Change IC601
Panasonic
Video Model: NVJ45 (G DECK Chassis)
Appeared to be dead (like C1110 1uF, 400)
Found C1125 and C1130 (680uF, 20v) leaking onto pcb. Remove sm.tx and clean board
Appeared to be dead (like C1110 1uF, 400)
Found C1125 and C1130 (680uF, 20v) leaking onto pcb. Remove sm.tx and clean board
Orion TV
Model: TV2501B
Dead set
Found the IRD shorted
Dead set
Found the IRD shorted
Telefunken TV
Model: Palcolor S540C (ICC9 Chassis)
Geen blauwe kleur
SMD transistor TV81 (Bc858) defect.
Geen blauwe kleur
SMD transistor TV81 (Bc858) defect.
Samsung
TV/Video Combi Model: VM3105
No video, no audio. High pitch sound from power supply.
Replaced blown fusible resistor R417 (1 ohm, 1/2 watt)
No video, no audio. High pitch sound from power supply.
Replaced blown fusible resistor R417 (1 ohm, 1/2 watt)
Bush TV
Model: WS6690D (11AK19 Chassis)
At switch on front l.e.d turns green, blinks twice then set returns to standby. All h.t voltages rise, then fall away as set goes into standby
33 ohm resistor feeding standby 5V reg was high (8 ohms - not shown cct diagram), in my case D605 on the 45 volt supply from the LOPT was faulty, although it measured o.k
At switch on front l.e.d turns green, blinks twice then set returns to standby. All h.t voltages rise, then fall away as set goes into standby
33 ohm resistor feeding standby 5V reg was high (8 ohms - not shown cct diagram), in my case D605 on the 45 volt supply from the LOPT was faulty, although it measured o.k
Thomson TV
(TX807 Chassis)
Plain raster, retrace lines, no sound
Problem in vif board, Resistor 68 ohms to +b supply line 12V
Plain raster, retrace lines, no sound
Problem in vif board, Resistor 68 ohms to +b supply line 12V
Hitachi TV
Model: C2146TN
Dead / int, led lit
Check the 5v regulator IC952, 8v regulator IC951, standby regulator IC950 and the field output chip (TA8427K) or for dry joints on the regulators
Dead / int, led lit
Check the 5v regulator IC952, 8v regulator IC951, standby regulator IC950 and the field output chip (TA8427K) or for dry joints on the regulators
Nordmende TV
Model: F20-9 (ICC7 Chassis)
No colour
Check IV01 (TA8659) or IE50 (TEA2114)
No colour
Check IV01 (TA8659) or IE50 (TEA2114)
Goodmans TV
Model: 2029T
Blank raster with no sound (eht & tube heaters present)
ZD401 s/c. Also take a look at R419. This set had been left on and R419 had cooked, it's value went to 20K
Blank raster with no sound (eht & tube heaters present)
ZD401 s/c. Also take a look at R419. This set had been left on and R419 had cooked, it's value went to 20K
Sony TV
Model: KVG25M1
Dead
Found Q802 (C4927) short, replace with same type as no other types last
Dead
Found Q802 (C4927) short, replace with same type as no other types last
Panasonic TV
Model: TX-2470
Cogging on vertical elements of picture, p.s.u squealing
Replaced C808 (10uF, 50V) It had gone low in value
Cogging on vertical elements of picture, p.s.u squealing
Replaced C808 (10uF, 50V) It had gone low in value
Panasonic TV
Model: TX21V1 (Alpha 2 Chassis)
Bright red raster with flyback lines,shutting down after about 30 seconds with squealing from power supply
The fault was due to the supply choke to the red output stage on the tube base panel being O/C, I can only assume the shut down was due to excessive beam current, a long soak test proved all was now ok.
Bright red raster with flyback lines,shutting down after about 30 seconds with squealing from power supply
The fault was due to the supply choke to the red output stage on the tube base panel being O/C, I can only assume the shut down was due to excessive beam current, a long soak test proved all was now ok.
Philips TV
Model: 20PT3742
Dead with LED blinking 4 times
The vertical output IC. is short circuit
Dead with LED blinking 4 times
The vertical output IC. is short circuit
Panasonic
Video Model: NVG30
Operates for about half hour to an hour and shuts down
Capstan IC located on the underside of main PCB was dry jointed due to exessive heat. Remove and discard plastic cover and apply fresh solder removing old. Also refresh heat sink compound.(I'll try extending the heat sink too)
Operates for about half hour to an hour and shuts down
Capstan IC located on the underside of main PCB was dry jointed due to exessive heat. Remove and discard plastic cover and apply fresh solder removing old. Also refresh heat sink compound.(I'll try extending the heat sink too)
Ferguson TV
Model: M8422U (ICC17 Chassis)
LED flashes once the 6 times then goes to standby
Replace LOT
LED flashes once the 6 times then goes to standby
Replace LOT
Philips TV
(L6.3 Chassis)
Failure of fusible resistors R3929 and R3930 (both 560R)
Unfortunately when these blow it is a sure symptom of LOT failure. When replacing these resistors, check the big blue 470nF, 250V capacitor behind them for signs of heat damage and replace if necessary, to avoid a recall (With resistors gone again)
Failure of fusible resistors R3929 and R3930 (both 560R)
Unfortunately when these blow it is a sure symptom of LOT failure. When replacing these resistors, check the big blue 470nF, 250V capacitor behind them for signs of heat damage and replace if necessary, to avoid a recall (With resistors gone again)
Aiwa TV
Model: VXT1400
When switching to STBY raster remains and buzz noise is heard from the speakers
Cause: +B voltage (103 V) does not switch-off. Remedy: Replace defective C541
When switching to STBY raster remains and buzz noise is heard from the speakers
Cause: +B voltage (103 V) does not switch-off. Remedy: Replace defective C541
will continue
