LG 55G2 Service Manual page 87

Standard Repair Process
LCD TV
No Video/
No audio
Copyright ⓒ 2012 LG Electronics. Inc. All right reserved.
Only for training and service purposes
A. Video error
Error
symptom
No video/ No audio
☞A4
Check various voltages
of Power Board
( 3.5V,12V,20V or
24V...)
Check and
Y
Normal
replace
voltage?
MAIN B/D
N
Replace Power
Board and repair
parts
35
Established
2012.01.16
date
Revised date
End
2012.03.21
LGE Internal Use Only