LG 75SJ857A Service Manual page 23
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Also See for 75SJ857A:
- Owner's manual (70 pages) ,
- Owner's manual (44 pages) ,
- Owner's manual (70 pages)
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Standard Repair Process
Error
symptom
No Video/
No audio
A. Video error
No video/ No audio
☞A18
Check various
Normal
voltages of Power
voltage?
Board (20V, 13.2V...)
Replace Power
Board and repair
parts
Established
Revised date
Check and
Y
replace
MAIN B/D
N
2
date
End
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