Established
date
Standard Repair Process
Revised date
1/16
LCD TV
Error
symptom
A. Video error
No video/ Normal audio
2013.01.31
Revised date
1/16
No video/ Normal audio
First of all, Check whether all of cables between board is inserted properly or not.
(Main B/D
↔
Power B/D, EPI Cable,Speaker Cable,IR B/D Cable,,,)
Normal
audio
Y
No video
Normal audio
Check
OLED
Light
On with naked eye
On
Y
Check Power
Board
24V
, 12V,3.5V etc.
Normal
voltage
Y
Replace T-con
Board or module
And Adjust VCOM
☞
A18
☞
A1
N
Move to No
video/No audio
N
N
Repair Power
Board or parts
Check Power Board
24V
output
☞
A18
Normal
voltage
Y
Replace Inverter
or module
N
End
Repair Power
Board or parts
Always check & record S/W Version and White
※
Precaution
☞
A4 & A2
Always check & record S/W Version and White
Balance value before replacing the Main Board
Replace Main Board
Re-enter White Balance value
1
Copyright ⓒ 2013 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Summary of Contents for 55EA8800
Page 51: ......
Page 56: ...H13 Block diagram ...
Page 62: ...Interconnection 1 55EA9800 PCBs 1 Main PCB 2 PSU 1 2 3 WIFI ASSY ...
Page 90: ...Appendix Exchange the Module 1 수직 비내림 Line Dim Brightness difference ...
Page 91: ...Appendix Exchange the Module 2 Angle view Color difference Brightness dot noise Half dead ...
