No audio
Screen normal
Off
N
Y
Cancel OFF
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
LCD TV
Error
symptom
Standard Repair Process
8
2013.03.05
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only
Содержание 42LA8600
Страница 51: ......