LG 42GA6400-UD Service Manual page 81
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Also See for 42GA6400-UD:
- Owner's manual (56 pages) ,
- Owner's manual (56 pages) ,
- Owner's manual (44 pages)
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Standard Repair Process
Error
LCD TV
symptom
No Video/
No audio
Copyright ⓒ 2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
A. Video error
No video/ No audio
☞A4
Check various voltages
Normal
of Power Board
voltage?
( 3.5V,12V,20V or
24V...)
Replace Power
Board and repair
parts
Established
Revised date
Check and
Y
replace
MAIN B/D
N
35
2012.01.16
date
End
2013.01.30
LGE Internal Use Only
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