LG 32LH500D - Video error - No video; Normal audio

Standard Repair Process
Check power board
and main board
voltage: PANEL_PWR_12V
Check Back Light
On with naked eye
Check Backlight driver voltage and +24V input to LED light bar
Y
On
N
A1
Replace T-con
Board or module
Y
Normal
Voltage
N
No video
Normal audio
LED TV
Error
symptom
A. Video error
Established
date
2016.03.07
No video/ Normal audio
Revised date
1/12
First of all, Check whether all of cables between board is inserted properly or not.
(Main B/D↔ Power B/D, LVDS, Speaker Cable, IR B/D Cable)
A2
Y
Repair LVDS power
ciucuit or change
main chip
Replace LED light
bar module
Repair power
board
Normal
Voltage
N
Y
End