LG OLED55/65C9PUA - No Video; no Audio

Normal
Voltage?
Check Power Board
output to Main (20V, 12V )
No Video /
No audio
Check and replace
Main B/D
Y
Replace Power B/D
or repair parts
N
End
Standard Repair Process
No video / No audio
☞A10/A11
Established
date
Revised date
2/17
Error
symptom
2
A. Video error
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