LG 49UJ6300 Service Manual page 28

Standard Repair Process
Error
symptom
No Video/
No audio
A. Video error
No video/ No audio
☞A18
Check voltage of
Normal
Power Board ( 13V...)
voltage?
Replace Power
Board and repair
parts
Established
Revised date
Check and
Y
replace
MAIN B/D
N
2
date
End
2/16