LG OLED55CS A Series - Page 22

Normal
voltage?
Check various voltages
of Power Board (Main)
(20V, 12V…)
No Video/
No audio
Check and
replace
MAIN B/D
Y
Replace Power
Board and repair
parts
N
End
Standard Repair Process
No video/ No audio
☞A9
Established
date
Revised date
2/16
Error
symptom
2
A. Video error
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