Repair Tips
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Results: 88172
Results: 88172
| Make | Model | Symptom | Problem | Solution | By |
|---|---|---|---|---|---|
| LG |
22LG30R
LP81K |
No sound, even through headphones. | Mute activated on sound output | Remove q501 | Joaomvjr |
| SAMSUNG |
LN32A550
|
Doesn't start | Defective photocoupler at the power supply. | Replace the photocoupler that remains alone in the power supply. When in doubt, I replaced them all. However, what is alone is the cause. | Rômulo |
| PROVIEW |
3208
|
Power supply short fuse burns instantly | C818 opened switch and the TV turned on normally | I.Ricardo | |
| CCE |
D32
|
TV doesn't turn on and the MOSFET Q29 is burned out | Open led bar and poorly sized power supply resistor (r164) with a value of 10k wsound the correct one would be 6.8k, because with the led bar open, the protection circuit works by receiving a little more bit more on pin 5 of the ci bit3251 1.5volts causing the bit3251 pwm ci to stop switching and sending voltage above 75v to the LED bar, thus protecting the q29 mosfet. | After changing the resistor r164 (10k) for a 6.8k one (SMD size 0805), changing the LED or complete LED bar and changing the MOSFET Q29 AOD446, it started working normally again. | JOSE_ADAIR |
| PHILCO |
PH21MSS
|
It doesn't turn on, the LED lights up and when it's going to turn on, the LED blinks a few times and stays on but it doesn't turn on. +b low. | Eeprom memory with corrupted data ends up killing the +b. rewrite eeprom. | jr_TEC | |
| AOC |
D32W831 L32W831
|
It would turn on, the blue LED would light up but it wouldn't start, sometimes it would turn on but tsound was no audio | U701 and u602, u701 3v3 regulator, regulating only 1.6v and u602 3v3 regulator regulating 0.75v | In my case I replaced the u701 with aic-1084-33pm and the u602 with s111733pi, just replace and run for the hug! | Inforseg Eletrônica |
| TOSHIBA |
2090AV
U14 |
TV turns on, but after a while it turns off, then you have to wait 10 minutes to turn it back on | Tda 8302 output shorted, 152pf ceramic capacitor open and cold solder on pin 27 of the central ci which left no contrast, contrary to some tips, with current leakage in the ceramic capacitor c905 which left the image with two bands on the side and av with no signal . | Replace everything and go out for a hug! | Jailson Lima |
| PHILIPS |
29PT4635
|
LED lights up, turns off using the control but does not oscillate on stand by 95v and on 140v | 7460 changed | Put bu4508 | samuel leite |
| CCE |
L2401
|
LEDs off | Cold welding in c 819 | marco.32 | |
| PHILCO |
TP1454
|
4 colored lines at the top of the screen | Capacitor c607 as low capacitance | Replace c607 22x50 | digital system |
| SAMSUNG |
T23D310LH
|
Does not turn on, LED lights up but does not activate power | Faulty power supply | Check if tsound is a voltage of 5v on pins 11 and 12, if not, replace the qm855, which releases 5v to pins 11, 12. | JORGE TV TÉCNICA PARANÁ |
| LG |
CM4460
|
It works for a while and freezes and does not accept commands and sometimes turns off | Placa principal transistor smd q501 | ELETRONICA CALLAI | |
| TOSHIBA |
1451NAV
U18 |
Predominant yellow and blue image | R 915 on the kinescope board | Valdenice | |
| PHILIPS |
20GL1049
GR1-R03 09 |
TV does not turn on and the LED is off, but tsound is a starting signal from the power supply. | The c2346 and c2347 were found dry (without capacitance) and, after changing them and carrying out a general inspection of other components, the TV was connected to the network and everything was ok. | Luiz Cassiano de Carvalho | |
| TOSHIBA |
TV2959IFS
FS7 |
With sound and sometimes without sound. | Mute circuit: measure the voltage at pin 56 of q501 and check if in the mute on condition it is equal to 5.0vdc and mute off is equal to 0.0 vdc and if the transistors q611/q631 go into cut-off and saturation. - if the switching on pin 56 of q501 is not performed when disabling the mute signal; replace micro q501 | If you don't want or can replace q501, remove the base from q611 and q630. | jr_TEC |
| PHILCO |
PHT777N
|
It doesn't turn on, the LED doesn't light up. | U200 (hf01b04) shorted. replace with the same code. | jr_TEC | |
| TOSHIBA |
TV2959IFS
FS7 |
It doesn't turn on, the LED turns on and off, +b very low. | This capacitor dries out too much, it's c819 (10uf/50v) | jr_TEC | |
| TOSHIBA |
TV2959IFS
FS7 |
Hoarse sound and sometimes no sound. | Don't waste time! first change the cg10(47uf/25v) connected to pin 19 of the qg01(mts decoder) as it may be exhausted and then to make everything ok, release the base of q611 and q631 and just be happy. | jr_TEC | |
| TOSHIBA |
TV2959IFS
FS7 |
Hoarse sound and sometimes no sound. | Don't waste time! First change the cg10(47uf/25v) as it may be depleted and then to make everything ok, release the base of q611 and q631 and just be happy. | jr_TEC | |
| PHILCO |
PCS-2952
|
Generating high voltage and the +b starts pulsing and making noise as if it were horizontally shorted. | Q902- ot306 | Replace for another ot306 or bt151-500r or another scr, check d707(ru4d), and the width capacitors and the +b capacitor. | Capiroto |