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LG Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
LG50PB560
No imageOn the p131 connector tsound was vs and va, but tsound was no 18v on the y-sus boardQ507 and d502 shorted near the 220k resistor.Eletronica EASI
LGFLATRON W2253-PF
Turns on after 40 minutes in hot weather, it turns off, only when it cools down it works ok, diode d1103 is weak. Change caps c875, c879, c1110, c1118, c1128.8Capacitor do reset.C 305 4.7 x50v works normally again.guinga sdia goias
LG FLATRON W2253-PF
Turns on after removing the power cord from the socket, it doesn't turn on anymore, then removing the power cord and turning it on works.Capacitor do reset.guinga sdia goias
LG42PG60UR
Turns on, then turns offCabo flat da tecon rustyClean flat cable oxidationWS NOTEBOOKS
LG32LG50D
Turns on with backlight without image on screenBga solder on processorReflow or reballing (reballing recommended) of the processor.GL Eletrônica - Contagem - MG
LG24MN33D-PS
Does not turn on; power supply short circuit on the 19v lineSmd ceramic capacitor c803 shortedReplace the same.duc40rj
LG42LK450
EAX61124201
Does not turn on, does not bend pfc 400vPrimary winding of the t501 transformer open. it does the vcc feedback to power the ic600 of the pfc circuit.Replace the t501 transformer.rafaelmoraes99
LG50PB560
Just sound ok2 -30f133 shorted and causing c414Angelo MG
LG32LH35FD
No audio or popping sound image delayedR205 220r is under the crystal glueBADRI ELETRONICA <small>This email address is being protected from spambots. You need JavaScript enabled to view it.</small>
LG28LN500
The backlight turns on and then turns offAfter checking the LED strip and it is ok,The cap was replaced. electrol. 10/250vAlexandre Batista
LG32LD420
Turns on, has an image, turns on the backlight, but keeps turning off/restarting, the image disappears and the image returns.Oxidation of the islands of the power supply and main plates that short circuit with ground.Sand all the islands, tighten the screws well and go for it.MARCO BORSATO - MEDTEC INFORMATICA
LGRP20CC
MC-059A
Vertical closedR301 openPaulo eletrônica
LG60PN6500
No image, has all the voltages but no "sus dn"R599 and r408, two 10r smds close to ic402Stiltec
LGCM4440
When turning on, sound comes out for just a second and stops, after 1 minute it goes into s-protect.Possibly defective pc903 photocoupler, replace it.It worked sound.RodrigoSpricigo
LGSUBSTITUTO DO LA4863AJ
The la4863aj can be replaced by the la4864aj or la4865ajAny of the mentioned vertical ci replace the other.MARCONES DE ARARIPINA-PE
LGRP-29FE80
Burning horizontal output.Replace the d2689 with a bu2520ax or c4429 Just drill another hole in the heatsink.MARCONES DE ARARIPINA-PE
LG14FK3RB
MC059D
Initially tsound were several problems, high power supply instantly burning the horizontal output, vertical closed, vertical foldingHigh power supply and without filter(r842 open 20k.e c835 47/160v open)(vertical closed.r313 47k open)(vertical folded coils open in deflector coil)High power supply and without filter(r842 open 20k.e c835 47/160v open)(vertical closed.r313 47k open)(vertical folded coils open in deflector coil)ALVES.TEC ELETRÔNICA CAMARAGIBE PERNAMBUCO
LG50PK550
HDMI 1,2 and 3 doesn't work, doesn't tune channelsAfter trying software updates and others, I reflowed the processor and it solved the problem.Carlossnk
LGCP 29K35A
Won't turn on without +bCapacitor 870 short power supplyLuiz pessanha
LG50PJ250
Turns on normally... but the screen doesn't light upOpen transformer .t501 transformed small ..on the y sus board .large board ..on one side it has 6 pins ..on the other 4 pinsLuis carlos