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Standard Repair Process
Error
LED TV
symptom
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, Key B/D cable,,)
Y
No video
Normal audio
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Only for training
and service purposes
A. Video error
No video/ Normal audio
Check Back Light
On
On with naked eye
N
A1
Check Backlight driver voltage and +30V input to LED light bar
Normal
Voltage
N
Repair power
board
Established
date
Revised date
A2
Check power board
Y
and main board
_PWR _12V
voltage: LVDS
Repair LVDS power
ciucuit or change
main chip
Y
Replace LED light
bar module
2015.06.16
Y
Replace T-con
Normal
Board or module
Voltage
N
End
1/12
LGE Internal Use Only
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