LG TV Repair: Common Faults and Solutions.
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Results: 4834
Results: 4834
LG Repair Guide: Common Issues and Fixes
| Brand | Model | Fault | Detailed Problem | Solution | By |
|---|---|---|---|---|---|
| LG | 32LV3700 | TV turns on, but does not activate backlight. | Short on main board. | C501 and c 502 shorted out, breaking l507, cutting off part of the board, next to the main cable. | RNSPTEC |
| LG | 14SB1RB | TV only turns on when it gets hot | Check two capacitors c549 and c546 connected to the x502 crystal | izaias | |
| LG | 42PG20R | Turns on and then turns off after a while | I took some tips from my colleagues and changed some capacitors on the power supply and the y-sus, but the defect continued | The solution was to replace 2 capacitors on the main board.c711 and 710 of 10mf/16volts | flavio |
| LG | OM4560 | Does not turn on at zero | Open power supply resistor. | Analyze r964, r963... | ELETRONICA MEDEIROS |
| LG | MCT 705 | It turns on, appears on the welcome display and goes out, nothing else works. | Fet q 931 (stw21nm60n) changed, the device returned to full operation. | Marcos | |
| LG | CM4640 | When the sound comes on, the sound comes out and then turns off and still goes into plot | Zd-903 is next to the transistor q-911 | eletronica publison natal rgn | |
| LG | 42LH35FD | Inoperative led blinking | C817 shorted | Eliminate | AGILDO ANDRADE |
| LG | 21FJ8RL | Image with colorful vertical bars | C524 electrolytic capacitor. 0.47 50v | Replacing the component close to the processor crystal | BETO ELETRÔNICA ACRELANDIA ACRE |
| LG | CM4440 | Turns on normally, sounds come out, but the display doesn't light up | Fr931 | Small transformer side resistance. | M.zidane |
| LG | 21FJ6RB MC-059A | When plugging the TV into the socket, the stand bay LED comes on and the TV starts, the armpit generates high voltage and turns off, the stand bay LED stays off | Deflector | Replace the deflector coil without measuring and the TV will work normally. God be praised! | Sinailson furtado |
| SOM LG | CM8430 | Works normally, cuts out the sound, when it increases it comes back and cuts out at high volume or in normal operation | I checked all the power supply voltages, they didn't vary when the defect occurred, so it wasn't the voltage, an output board defect | I resoldered all the SMD, capacitors, integrated sound circuit (near the heatsink) and it worked again ok | carlosobf |
| LG | 20CD2R-LD MC-059A | Vertical with a white stripe at the top of the screen with lines of retraces. | 15k resistor 301 altered to give 19.8k | Replace and go out for the hug. | ELETRÕNICA VISÃO |
| LG | 32LH515B | Completely stopped. | +b 19 volt line shorted. I found the chapter. smd 5412 short, I replaced it and the TV started working normally again. this chapter. is close to the c.i. audio output. good luck . | <small>This email address is being protected from spambots. You need JavaScript enabled to view it.</small> | |
| LG | 28LN500B-P LB32A | It doesn't turn on, nor does the power LED light up, but it has 3v3 sdt by | C742 that goes on the basis of q702 that does "sb_mute" with escape. it triggers the bga reset too. | If you can't find a schematic for the 28ln500b, use the one for the 24mn33d, it's the same chassis | André Costa |
| LG | 22LG30R LT81R | No audio on all inputs | Mute activated on sound output | Jumper the base and emitter of the q501. Note that even with this procedure, the device remains on mute. | Chumbão |
| LG | 24MN33N-PS | Turns on works normally then the sound goes off and comes back on if it turns off and on again | The sound disappears after a while on | Remove the r709, stay close to the sound output and run to the hug. | Gilberto Costa |
| LG | 32LB560B | Has sound but no image | Replaced LEDs | ||
| LG | 32LN540 | No image, backlight on | Tcon with blown fuse | Disc capacitors c73 and c71 shorted at tcon | oskarala |
| LG | M2241A-PM | TV turns on and blinks. | Cold solder on the lamp connector. | Just redo the soldering and run for the hug! | Bob Ramilo |
| LG | CM5660 | Sound works normally with loud sound increasing and decreasing with the power supply varying the voltages | Damaged transistor q911 ktc3203 | Damaged transistor q911 ktc3203 | alves.tec Recife/PE |