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LG Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
LGLAC-M8410R
AUTO-RADIO
Does not turn on, when connected to 12v the CD eject motor activates for a few seconds (normal)Leaky transistor q260 (2sc3205)slh_electronica
LGCP-29K30
Flashing (disarming)Note that the ci vertical output heats up, change it, then go to the horizontal stage, tsound are 2 large diodes, one must be shorted, pay attention (high frequency) change it and go for the hug, good luck jose vicentejose vicente
LGPT 20A35
LED blinks blinks and does not turn onFlay backSubstitutedBASK
LGMP 42Z10
PLASMA
Mirror image, in lighter images the white lines become faded.Integrated circuit ic. 203 brokenComponent replacement, be careful with these televisions, always use genuine parts, and observe the type of solder used, some of these solders may not contain lead, check the service manual whenever you find the following character (!).WAGGUINHO
LG14K7-42
Normal sound, no videoD501, d403, d405
LGCP-2584 M
Sem osdSwap c401 and d401
LG29CC90
Works a few minutes later, the lineariade remains open to the middle of the screenCi->tda4863a
LG29KL05
Closed horizontal, vertical white lineC563 and q753Andrade Sequeira
LGSTUDIOWORKS 700E
X effect, cushionQah09
LGDV256K
No image in composite video, s-vhs and progressive scan;Replace o ic mt1389fe , ic 601 mpeg .This defect is not because it is progressive. It is a defect! " (This email address is being protected from spambots. You need JavaScript enabled to view it.)'ars
LGLU-U550A
Drawer does not open intermittentlySee CD board ground via cn804 connectorars
LGDR175
Low and distorted audioQ164
LG21FE85
Turns off after a minutePlease 403
LG29FX5CL
Turns off after turning on.Probable cause r843
LGSTUDIOWORKS 500G CB553H-AL
CA-120
Excess width and no e/w correctionD703->mur460
LG14CB20
Hoarse soundR621
LGRP-20CB20 A
Probable cause c835 - c814
LGRP-14K40
Darkens after a while from left to rightD405 with escape
LGCP-29K30
When turning on gun protectionShorted fly-back, measure at x10k of the mate cable with leakage earthwww.rmeletronica.com.br
LGCP-14J52
No contrastD502