LG 43LF510A Service Manual page 27

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Standard Repair Process
Error Symptom
Content
First of all, Check whether all of cables between board is inserted properly or not.
(Main B/D ↔ Adaptor, LVDS Cable, Speaker Cable, IR B/D Cable...)
No video
Normal
Normal audio
Audio
Move to
No video/No audio
※Precaution
☞A3 & A6
Always check & record S/W Version and White
Balance value before replacing the Main Board
Copyright © 2015 LG Electronics. Inc. All rights reserved.
Only for training and service purposes
A. Video Error
No video / Normal audio
☞A1
Y
Check Back Light
On with naked eye
N
☞A2
Check Main B/D to LED Back light Voltage
B/D or Repair parts
☞A4
Y
Check LVDS 12 V
On
of Main B/D
N
Y
Normal
Change Module
Voltage
N
Replace Main
Replace Main Board
Established date
Revised date
Y
Replace T-con B/D
Normal
Voltage
N
Replace Main
B/D or Repair parts
Re-enter White Balance value
1/14
or Module
LGE Internal Use Only

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