LG 47LB5610 Service Manual page 41

Standard Repair Process
Error
LCD TV
symptom
☞A4
Check various
No Video/
voltages of Power
No audio
Board ( 3.5V,12V, 24V)
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Only for training and service purposes
A. Video error
No video/ No audio
Check and
Y
Normal
replace
Voltage
MAIN B/D
N
Replace Power
Board and repair
parts
Established
2012 . 01 .14
date
Revised date
End
2/14
LGE Internal Use Only