No Video/ No Audio - LG 79UB980T-TA Service Manual

Standard Repair Process
Error
LCD TV
symptom
No Video/
No audio
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Only for training and service purposes
A. Video error

No video/ No audio

☞A18
Check various
voltages of Power Normal
Board ( 3.5V,12V,20V voltage?
or 24V...)
Replace Power
Board and repair
parts
Established
Revised date
Check and
Y
replace
MAIN B/D
N
2
2013.01.31
date
End
2/16
LGE Internal Use Only