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LG Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
LG32LJ600B
Does not turn on, the LED is blinkingWifi card, with shorted smd capacitorCapacitor removalLOOPTEL
LG49LJ5550
49LJ5550
Image freezing with loss of resolutionBroken displaymanoel
LG32LD420
Does not tune channelsCapacitors c458 and c460 10mf 25v shorted and l417 open.When replacing the 12v voltage of the ic406 returns to normalEletrônica JJ
LG32LD420
Whitish screen, background image appears normalCapacitor c659 22mf/16v next to the flat connectors in shortWhen replacing the 8v voltage returns to normalEletrônica JJ
LG42PJ350
The TV turns on and has all the voltages and sound, but tsound is no image. as x normal league.Ic100, reg 3v3 smd atrás tcon.I fixed it and it came back normalJoaomvjr
LG32LC4R
Hdmi failingCapacitor eletrolitico c832ReplacementBETO
LGMC3793
Missing audio power supplyR917 de 1mωReplacegilelectros
LG29FU6TL
CM-62D
Fly-back without referenceDirtBsc26-n2138Sinailson furtado
LG29FU6TL
CM-62D
Inoperative blowing fuseShorted picture tube. the tube shorted out and burned the q401 the c463 the r841 the r860 of 2r and 2w the d829 is the strw6556a all of this burned because of the tube!Replace the picture tube and all broken components and the TV will be working normally. God be praised!Sinailson furtado
LGRP14CB25A
Does not turn on, the LED keeps flashing, low power supplyReplace zener diode zd851, 6v2 not secondary power supplyDJ PITUKA
LGM2241
Does not turn on LED offQ302 ci do inverterQ302 repair on the lamp connector. c does not recover, the ci burns out again.
LG32LN5400
Does not work, standby LED is offTsound is no 3.5v voltage at the power supply, it was the c103 100/50v shorted in the primaryReplaced and resolvedPATRICK ELETRÔNICA
LG32LD350
League without image, only soundT-con plate with oxidationCleaned the ultrasonic tank with isopropyl alcohol, re-welded the flat connectors and cleaned the flats, it returned 100%FELIX.MAP
LG 42LB5800
42LB5800
Don't care! After pressing the power key, the standby LED blinks and stays on and the TV does not turn on.Damaged power supply photocouplers. ic102 2 ic103Replace the two el817 photocouplersMIDIA SCREEN
LG42PQ30R
TV turns on with lots of colorful drizzle on the imageR607,r631,r630 open and q22 shortedJust replace it and that's itResistronic resende
LG42LN5460
TV turns on with back light, but no image, mainboard voltages are normalAbnormal heating was found in the ci u2 of the t-com board, which feeds the v-comThe defect was in the shorted SMD capacitor in position C221 on the V-COM boardEletronicaEMB
LG32LC4R
No image or sound on hdmiElect caps. around ic303Test esr and replace the problematic ones.davi.sls
LG14FK3RB
Turns on, the stand by LED lights up, and turns off at 5v.R816 connected in series with 815. I thank this site, as I benefited from it sound. hugs.DERCI JOAQUIM
LGCP-15Q90A
SC-023A
Does not turn on - stuck on standby or the LED blinks when power onAfter testing flyback, normal vertical and other capacitorsReplace without measuring c831 and c826 defect resolved (bushing).MARCELO RODRIGO QUINELATTO BIRIGUI-SP
LGCM4330
Intermittent, sometimes it turns on normally, other times it turns on a squeaky sound and goes into protection!Altered zd904 diode, in the test it may appear as normal!Replace without measuring!Doremilton