LG 55LB6500-um - Page 89

Established
date
Standard Repair Process
Revised date
1/13
LCD TV
Error
symptom
A. Video error
No video/ Normal audio
2013. 11 .30
☞A4☞
A
1
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
And Adjust VCOM
RiP Bd
Ch k P B d 24 t t
☞A28
Move
to
No
video/No audio
R
epa
i
r
P
ower
B
oar
d
or parts
Ch
ec
k
P
ower
B
oar
d
24
v ou
t
pu
t
Normal
v
o
l
tage
Y
Replace Inverter
or module
o tage
N
Repair Power
Board or parts
End
※
Precaution
☞
A7
Always check & record S/W Version and White
Balance value before replacing the Main Board
Replace Main Board
Re-enter White Balance value
※
Precaution
☞
A7
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