LG 32LF550U-ZA - Standard Repair Process; A. Video error

Y
N
Move to
No video/No audio
No video
Normal audio
Check Back Light
On with naked eye
Check Power
Board 13.2V etc.
Replace T-con
Board or module
Repair Power
Board or parts
Check Power Board to LED Back light Voltage
Change module
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
1/14
Error symptom
A. Video error
No video / Normal audio
☞A4
☞A1
☞A2
☞A6 & A3
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
On
Y
N
Normal
Voltage
Normal
Voltage
Y
N
Y
N
Copyright © 2015 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
LGE Internal Use Only