LG TV Repair: Common Faults and Solutions.


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LG Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
LG21FJ6RB
Turns on normally, after a while it turns offRusty d501Barter itNel Eletronica
LGRP20CB62
No horizontal synchronizationMemory 24c04Replace it and reprogram it - leave 8 keys in 1 so that the on/off switch works perfectly.eletronicaapolo
LGCL-21K40MQ
Chirping very loudly and out of horizontal frequencyAll I had to do was change the deflector coil and the TV was fine.ELETRO JACOB
LGRP 21FE85G
OffOpen r420R420=240k replaceVITALTEC
LG32LG30R
TV turns on whenever it wantsC108- zd111 z112 remove outsideRemove it to activate protectionELETRONICA MAURI JUNIOR
LG21FU4RLG
TV has image but no sound, good speaker, sound output ok, I re-recorded the memory and nothingUpdate snd mode in service mode. enter service mode and do this >>> 1- update snd mode 1.1 - press the in-start key on the remote control. 1.2 - press the menu key 4 times. (after pressing the menu key 4 times, figure 01 will appear on the screen). 1.3 - access the snd mode icon and change it with the right arrow on the control as instructed below. - for tv mono model = snd mode = mono - for tv stereo model = snd mode = 2 real st 1.4 - after the change, press the enter key and then turn off the tv using the power key on the remote control (to save the change).Enter service mode and do this >>> 1- update snd mode 1.1 - press the in-start key on the remote control. 1.2 - press the menu key 4 times. (after pressing the menu key 4 times, figure 01 will appear on the screen). 1.3 - access the snd mode icon and replace it with the right arrow on the control as instructed below. - for tv mono model = snd mode = mono - for tv stereo model = snd mode = 2 real st 1.4 - after the replace, press the enter key and then turn off the tv using the power key on the remote control (to save the replace).GILSON
LGRP-14CB20A
Completely stopped, stand by LED off, power supply voltages all normal.Capacitor c833 [220uf/10v] shorted.Replaced for a 470μF/16v one without any replaces.Altevirlima_Valparaiso Eletrônica_PA
LG21FU4RL
Completely stopped without standbyC 25 shortedsilva2
LG32LG3000
LD84A		Does not start. The blue status light stays on intermittently after trying to start.Change secondary power supply capacitors even if they seem okiToolBox
LGL172WT
Doesn't startPower supply ic101 1200p60Replace ic101 1200p60vhilario
LG21FU4RL
TV does not oscillate when turning off the vertical power supply, it oscillates more when the vertical is closedReplace c311 2200x25 veuripedes
LGDR175B
Nor video tÉm sÓmRemove any disc from the drawer and close it, when the message appears on the disc, press and hold the stop button on the panel for 5 to 10 seconds, this procedure disables the progressive scanEletroClaudio Aguas Belas
LGDT-585NP
Does not turn on, low power supply voltages.C121 + c122 power supply.Mário Tavares
MINI SYSTEM LGRAD114
Tsound is no soundIc801 mlc9800 shorted at 3.3v inputReplaceEletroClaudio Aguas Belas
LG MCD504
Total shutdownPower supply does not generateQ902 with leakage replacevitaltec
LG21FJ6RB
Blurry image/white screen. After a good while on, it returns to normal.Trc board socketReplace socket, turn it on, and everything is ok.bonfim/soluçoes eletrônicas
LGRP29FA35A
Without +b inoperative {not even the LED lights up}Capacitor c405= 681/ 2kv {shortcut}AC MORENO
LG21FU4RL
+b low. When you press the power key, the LED goes off and then lights up.Tr q801 (c5343) on the power supply secondary.Manoel (Noca)
LG.29FX5CL
Very open image on the right side of the screen, the menu is shaped like a cup.C407 shorted.It was just a matter of exchanging and celebrating.Armando;Eletronica EvoluSom
TV LG14FK3RB
No sound, no image and vertical abnormalityC 518 100uf10voilec