Advertisement
Standard Repair Process
Error
symptom
First of all, Check whether all of cables between board is inserted properly or not.
(Main B/D↔ Power B/D, LVDS or EPI or CEDS Cable, Speaker Cable, IR B/D Cable,,,)
No video
Normal
Normal audio
audio
N
Move to No
video/No audio
※Precaution
☞A4 & A2
Always check & record S/W Version and White
Balance value before replacing the Main Board
A. Video error
No video/ Normal audio
☞A1
Y
Check Back Light
On with naked eye
☞A18
Check Power Board 13.2V output
Repair Power
Board or parts
☞A18
Y
Check Power
On
Board 13.2V etc.
N
Y
Normal
Replace Inverter
or module
voltage
N
Replace Main Board
1
Established
date
Revised date
Replace T-con/Main
Y
Normal
Board or module
voltage
N
Repair Power
Board or parts
End
Re-enter White Balance value
Copyright © 2021 LG Electronics. Inc. All rights reserved.
Only for training and service purposes.
Advertisement
