Established
date
Standard Repair Process
Revised date
1/14
LCD TV
Error
symptom
A. Video error
No video/ Normal audio
2012. 01 .14
☞
A4
☞
A1
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,,,)
Normal
audio
Y
N
Move to No
No video
Normal audio
Check Back Light
On with naked eye
On
Y
N
Check Power Board
12v,3.5v etc.
Normal
voltage
Y
N
Replace T-con Board
or module
R
i P
B
d
Ch k P
B
d 24
Move to No
video/No audio
Repair Power Board
or parts
Check Power Board 24v output
Normal
voltage
Y
Replace Inverter
or module
☞
A2
o tage
N
Repair Power
Board or parts
End
※Precaution
☞
A6 & A3
Always check & record S/W Version and White
Balance value before replacing the Main Board
Replace Main Board
Re-enter White Balance value
※Precaution
☞
A6 & A3
4 / 97
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Summary of Contents for 55EA970T
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