LG 50UH5500 Service Manual page 85

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