LG 32LG2100 Service Manual page 27

Standard Repair Process
Error
LCD TV
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 Y
Normal
Normal audio
audio
N
Move to No
video/No audio
Precaution
Always check & record S/W Version and White
Balance value before replacing the Main Board
A. Video error
No video/ Normal audio
Check Back Light
On
On with naked eye
N
Check Power Board 20V /12V or 24v output
Normal
voltage
N
Repair Power
Board or parts
Replace Main Board
Established
date
Revised date
Y Check Power
Normal
Board
voltage
12v,5v etc.
Repair Power
Board or parts
Replace Inverter
Y
or module
Re-enter White Balance value
1
2008. 3 .05
Replace Main Board
Y
OR
Replace T-con
Board or module
N
And Adjust VCOM
End
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