LG OLED88ZX9LA - Page 44

No audio
Screen normal
Check user menu
→ Internal TV Speaker
or not
Off
N
Y
Cancel OFF
Check audio B+
voltage(20V) of
Power Board
Normal
voltage
Y
N
Replace Power Board and repair parts
Check Speaker
disconnection
N
Y
Replace Speaker
Replace MAIN Board
End
C. Audio error
No audio/ Normal video
☞A11 ☞A12+A9
Disconnection
Established
date
Revised date
10/18
Error
symptom
Standard Repair Process
10
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