No audio
Screen normal
Check user
menu >
Speaker Out
Off
N
Y
Cancel OFF
Check 13.2V 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
☞
A4
Disconnection
Established
date
Revised date
7/13
Error
symptom
Standard Repair Process
7
Monitor Signage
Copyright
ⓒ
2020 LG Electronics Inc. All rights reserved.
Only training and service purposes.
Summary of Contents for 50UL3G
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