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Standard Repair Process
Error symptom
☞A4
Check various
No Video/
voltages of Power
No audio
Board ( 3.5V,12V, 24V)
Copyright © 2015 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
A. Video error
No video/ No audio
Check and
Y
Normal
replace
Voltage
MAIN B/D
N
Replace Power
Board and repair
parts
Established
date
Revised date
End
2/14
LGE Internal Use Only
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