LG 49LH6000, Service Manual, Page: 29 / 60

Standard Repair Process
Error
symptom
Established
date
Revised date
Audio O
Y
N
Move to No Video /
No Audio Channel
Video X /
Audio O
Check
Back Light On with
Naked eyes
On
Y
N
Check Power B/D
13V
Normal
Voltage
Y
N
Replace T-con
/Main B/D or Module
Repair or Replace
Power B/D or parts Check Power B/D 13V output
Normal
Voltage
Y
Replace Inverter
or Module
N
Repair Power B/D
or parts
End
Always check & record S/W Version and White
Balance value before replace the Main B/D
Replace Main B/D
Re-enter White Balance value
※
Precaution
1/14
A. Video error
Video X / Audio O
☞
A9
☞
A1
☞
A9
☞
A4 & A2
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…)
Copyright © 2016 LG Electronics Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only