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LG Repair Guide: Common Issues and Fixes

Brand Model Fault Detailed Problem Solution By
LGRP20CB67
Works after 10min. toPut a resistor in parallel with the cap. 409Bruno Nicacio This email address is being protected from spambots. You need JavaScript enabled to view it.
LG20CB20A
Sound at maximum and even turning it down on the keyboard it remained high at maximum and pressing channel - turned off the TVMemoria eproonROBERTO
LGHT503SH
Hdmi output and display do not workOpen l226 shockL226 replacears
LG14SB1RB
Screen with the vertical closed 4 centimeters at the top and the image shakingNon-vertical cold weldingResoldereletroclaudio aguas belas
LG21FX5RL
Just turning offR408 e c409Check the entire abl line and replace the bad components in this line note: be careful with the electrolytic capacitorsCSOM-(066)34231060
LGRP-21FD15
21FD15
It turns off after a while, on some channels faster than on others and with a static image (bar generator) it doesn't turn off.Replace q403 (bf421)NARDINHO-ALFENAS
LG29FS4RLG
Reduced screen, cup effect (pin-cushion)Cap 406 of 20 k /2kvReplace the sameJDANTEX
LGCP-20K70
When activating power, it disarmed in 3 secondsDry power supply 26 v tripped the TV due to the short in terminal 2 of the ci la7833- vertical outputEletrônica Estudier- Canoas RS.
LGL2010P
Doesn't startCheck all capacitors, both on the primary and secondary of the power supplyI ended up replacing all the capacitors, even the ones that looked good according to the capacimeter...eengcabral
LG32LB9RTA
Does not activateTV only lit the stand by LED. After checking the power supply, changes were found in the chapters. elect. 204, 221,22 and 223 and after replacing them, the TV worked perfectly again.SEBASTIÃO
LG21FSRLG
No channel tuningR114 (30k)Manoel
LGRP-29CC90
MC-049A
Image opened half way upIc301Replace the tda4863aj and 100/35v capacitor c304JOSÉ GUSMÃO
LGRP20CB25A
Replacement.Coupler photo.Replacement.This email address is being protected from spambots. You need JavaScript enabled to view it.(floripaSC)
LGCP20B86
Varying the width as the screen brightness increases or decreases. It heats up the bu excessively.R550, open.ReplacementThis email address is being protected from spambots. You need JavaScript enabled to view it.
LGRP21FD15
DeadOn off switchReplacedgil celio
LG29FX5CL
Sometimes it turns on, the image shakes.Ic802Replace pc17li equal to pc817marcos
LG21FX5RL
Turns on then activates protectionC308 47uf 16vReplace the sameCarlossomtv
LG29CC90
No audioZd 601 changedZener diode replacementGENIVALDO
LGCP-21Q24
Doesn't startCold solder on the power supply fb804Resoldereletroclaudio aguas belas
LGCP-29K30
Width closing, cushion defect27k open resistor (r316)Cícero André