LG 65UH8500 - Audio Error; No Audio; Normal Video

No audio
Screen normal
Check menu >
Sound Out set
CORRECT output
Correct
Y
N
Set correct output
Check audio B+ 24V
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
☞A20 ☞A21+A18
Disconnection
Established
date
Revised date
8/16
Error
symptom
Standard Repair Process
8
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