LG 55LM9600 Service Manual page 72

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
2
Established
2012.01.16
date
Revised date
End
2/15
LGE Internal Use Only