Filter
Top Products
Normal
voltage?
Check various
voltages of Power
Board ( 3.5V,12V,20V
or 24V…)
No Video/
No audio
Check and
replace
MAIN B/D
Y
Replace Power
Board and repair
parts
N
End
Standard Repair Process
A. Video error
No video/ No audio
☞A18
Established
date
Revised date
2/16
LCD TV
Error
symptom
2
2013.01.31
Copyright © 2013 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only