Audio Error; No Audio/ Normal Video - LG 65UH8500 Service Manual

Standard Repair Process
symptom
No audio
Screen normal
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Only for training and service purposes
C. Audio error
Error

No audio/ Normal video

☞A20
Check menu >
Sound Out set Correct
CORRECT output
Set correct output
Check Speaker
disconnection
☞A21+A18
Check audio B+ 24V
Y
of Power Board
N
Replace Power Board and repair parts
Disconnection
Y
Replace Speaker
8
Established
date
Revised date
Y
Normal
voltage
N
N
Replace MAIN Board
8/16
End
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