LG 19LS350S Service Manual page 22

Standard Repair Process
LCD TV
symptom
No Video/
No audio
Copyright © 2012 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
A. Video error
Error
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
Established
2012 . 01
date
.14
Revised date
End
2/14
LGE Internal Use Only