LG OLED77G3 Series - Page 28

Standard Repair Process
A. Video error
No video / No audio
2/18
Error
symptom
2
Established
date
Revised date
Normal
voltage?
Check Power Board
20V,12V output
No Video/
No audio
Check and
replace
MAIN B/D
Y
Replace Power
Board and repair
parts
N
End
☞A9
Copyright © 2023 LG Electronics Inc. All rights reserved.
Only for training and service purposes.