LG OLED55/65C9PUA - A. Video Error

Normal
Audio
Y
N
Move to
No Video/No audio
No video
Normal audio
Check Vx1 lock
voltage
0V
Y
N
Check Power Board
output to Main.
(20V, 12V)
Normal
Voltage
Y
N
Replace Main B/D
Replace Power B/D
or repair parts
Check Power Board output to Module
55”/65” : 23V, 12V
77” : 26V, 12V
Normal
Voltage
Y
Replace Module
N
Replace Power B/D
or repair parts
End
Always check & record S/W Version and White Balance value
before replacing the Main Board
Replace Main B/D
Re-enter White Balance value
※Precaution
Established
date
Standard Repair Process
Revised date
1/17
Error
symptom
A. Video error
No video / Normal audio
☞A10/A11
☞A10/A11
☞A4 & A2
First of all, Check whether all of cables between board is inserted properly or not.
(Main B/D↔ Power B/D, Vx1 Cable, Speaker Cable, IR B/D Cable and so on)
1
☞A1
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