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Standard Repair Process
LCD TV
No audio
Screen normal
Copyright ⓒ 2010 LG Electronics. Inc. All right reserved.
Only for training and service purposes
C. Audio error
Error
symptom
No audio/ Normal video
☞A24
Check user
menu >
Off
Speaker off
Y
Cancel OFF
Check
Speaker
disconnection
Revised date
☞A25
Check audio B+
N
Normal
20V or 24V of
voltage
Power Board
Replace Power Board and repair parts
N
Disconnection
Replace MAIN Board
Y
Replace Speaker
8
Established
2010. 2 .19
date
Y
N
End
8/13
LGE Internal Use Only
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