Normal
audio
Y
N
Move to No
video/No audio
No video
Normal audio Check Back Li ght
On with naked eye On Y
N
Check Power
Board
12v,3.5v etc.
Normal
voltage
Y
N
Replace T-con
Board or module
Repair Power
Board or parts
Check Power Board 24v output
Normal
voltage YReplace Inverter
or module
N
Repair Power
Board or parts
End
Always check & record S/W Version and White
Balance value before replacing the Main Board Replace Main Board Re-enter White Balance value
Precaution
Established
date
Standard Repair Process
Revised date 1/14
LCD TV Error
symptom A. Video error
No video/ Normal audio

A4A1

A2

A6 & A3

First of all, Check whether all of cables between board is inserted properly or not.

(Main B/DPower B/D, LVDS Cable,Speaker Cable,IR B/D Cable,,,)

2012. 01 .14
LGE Internal Use Only