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LG OLED77Z19LA - Page 22

LG OLED77Z19LA
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Normal
audio
Y
N
Move to No
video/No audio
No video
Normal audio
Check Vx1 lock
voltage
On
Y
N
Check Power board
output to Main.
(12V, 20V)
Normal
voltage
Y
N
Replace Main Board
Repair Power
Board or parts
Check Power Board output to Module (23.5V)
Normal
voltage
Y
Replace Module
N
Repair Power
Board or parts
End
Always check & record S/W Version and White
Balance value before replacing the Main Board
Replace Main Board
Re-enter White Balance value
Precaution
Established
date
Standard Repair Process
Revised date
1/18
Error
symptom
A. Video error
No video/ Normal audio
A9A1
A9
A4 & A2
First of all, Check whether all of cables between board is inserted properly or not.
(Main B/DPower B/D, VX1 or EPI Cable, Speaker Cable, IR B/D Cable,,,)
1
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