LG TV Repair: Common Faults and Solutions.


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Search: LG
Results: 4833

LG Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
LG50UM7510PSB
TV turns on but no Wi-Fi, does not find networks.Wi-Fi board, shorted, and main without Wi-Fi power.Wi fi board with shorted smd capacitors, without screen printing on the board, causing the damaged q4101 kfj smd mospfet (kfj and ssm3j332r on pin g=0.80v s=3.5v d=3.5v) to burn out, powering the wi fi card .RNSPTEC
LGRP-20CC25
MC-059A		LED turns on and offPhoto coupler ic 802*Marcílio Ângelo
LG32LV2500
StopWhen turning on the TV, the standby turns off the relay and turns it off. Capacitor shorted on the audio output c528 or c520 killing bone. 12 turns from the power supplyCabeça
LG21FU6TL
Image appears voltage +b dropping to 80 volts and turns offQ801 changedReplace without measuring q801samuel leite
LG21FX5RL
Ugly contrast....off strange luinanceR547 open82k....it was original from the factory with 100kAlextecnico
LG37LH35FD
It has standby, red LED, turns on, goes to blue LED, backlight comes on but tsound is no image.Cold solder on the processor.Reballing of the mainboard processor.MARCO BORSATO
LG42LH35FD
It has standby, red LED, turns on, goes to blue LED, backlight comes on but tsound is no image.Cold solder on the processor.Reballing of the mainboard processor.MARCO BORSATO
LGCJ87-AB
Sound doesn't turn on, tsound are only voltages of 12vots and +5vots, remove the x500 and x501 crystals and resolder them by cleaning the area, that's what I did and it worked, the -5volts and the other voltages only exist when the sound is turned on okI resoldered and cleaned the location of the x500 and x501 crystalsGALILEU ROCHA
LG32LE3300-ZA
LD01D		The menu appears and performs functions aloneSwollen capacitors in the power supplyReplace c211 and c212 in the power supply, (1500μF/6.3v), you can put 2200μF/6.3vdirestraits
LGCP20J52
MC-83C		No image, normal audio.Leaky d405 diode. note; can you put 1n4148After changing the TV ok.George Pontes
LG42LH30FR
The STB LED only stays on. TV doesn't turn on.Ic1007 with voltage lower than 3v3.PLAY BACK
LG42LH20R
I'm soundCapacitor c809 prox ao micro 10ufx16vJoao Bosco Sorocaba
LG42LM6200
Does not turn on, stand by LED is offCapacitor c4324 shorted on motherboardReplaceMaurilio
LG42LH30FR
The STB LED only stays on. TV doesn't turn on.Ic1007 with voltage lower than 3v3.PLAY BACK
LG42LS5700
Plug it into the socket LED turns red...turns on power and doesn't turn onResolder the 3 coils on the power supply cable input signal board l2403 and 2 moreLuis carlos
LG CM9730
When turned on, the device remains silent in all functions, in a few seconds it drops the popcorn into the box and it becomes silent againChecked the outputs, everything was ok, I checked that they were in the ci sdram signal, I replaced it on the main board ic502Ic 502 replacementThiago Campos
LGM2762D MTV0-01
Power supply does not startSubstituir sem medir c401, c402, c403, c404 (5pf/3000v)Rui
SOM LG CM 8350
Sound turned off completely.Main capacitor of the 330/450 power supply leaking oil and giving 150 mf on the capacitor and the 12 amp fuse blew, replaced and resolved.Galileu Rocha
LG43LH5150
LJ67A		Backlight does not turn onBefore giving a quote for the LED panel, check diode d500 on the main board 3cm close to the connector for the wires that go to the backlight, between square coil (l501) and capacitor c504 (33/100v). this diode shorts out: code sr210.....I put an sb5200 diode...it worked...D500 replaceMIGUELTV
LG26LC7R
Turning on with backlight off24v fuse on inverter boardFuse at the input showed 24v and at the output, only 21 or less than 24 came out, replaced it and the backlight came on, replace all the capacitors in the power supply, as the ones that came in sound were all blown, replace them all, don't trust capacheckJYN