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Standard Repair Process
Error symptom
First of all, Check whether all of cables between board is inserted properly or not.
(Main B/D ↔ Power B/D, LVDS Cable, Speaker Cable, IR B/D Cable...)
No video
Normal
Normal audio
Audio
Move to
No video/No audio
※Precaution
☞A6 & A3
Always check & record S/W Version and White
Balance value before replacing the Main Board
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Only for training and service purposes
A. Video error
No video / Normal audio
☞A1
Y
Check Back Light
On with naked eye
N
☞A2
Check Power Board to LED Back light Voltage
Repair Power
Board or parts
☞A4
Y
Check Power
On
Board 13.2V etc.
N
Y
Normal
Change module
Voltage
N
Replace Main Board
Established
date
Revised date
Y
Replace T-con
Normal
Board or module
Voltage
N
Repair Power
Board or parts
End
Re-enter White Balance value
1/14
LGE Internal Use Only
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