LG 42LF650T Service Manual

Normal
audio
Y
N
Move to
No video/No audio
No video
Normal audio
Check Back Light
On with naked eye
On
Y
N
Check Power Board
D13V
Normal
voltage
Y
N
Replace T-con Board
or module
Repair Power Board
or parts
Check Power Board DRV_ON output
Normal
voltage
Y
Replace 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
1/13
Error
symptom
A. Video error
No video/ Normal audio
☞A5
☞A4
First of all, Check whether all of cables between board is inserted properly or not.
(Main B/D↔Power B/D, LVDS/EPI Cable,Speaker Cable,IR/Wi-Fi combo cable↔Main B/D,,,)
☞A5
Copyright ⓒ 2015 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only

LG 42LF650T Specifications

General

Brand	LG
Model	42LF650T
Category	LED TV
Language	English