I'm not sure but I think the power supply it's the problem.
I unplugged the cable that goes to the main board I didn't have backlight,
I checked the voltage on the cable that goes to LEDs and I have
1 D+ 0.0
2 S- 0.011
3 NC
4 S- 0.001
5 D+ 0.002
I have those values and the cable going to BL is plugged.
I touched at the same time pin 1 and pin2 and I had backlight and image on the screen, like the tv it is perfectly working.
I unplugged the cable that goes to the main board I didn't have backlight,
I checked the voltage on the cable that goes to LEDs and I have
1 D+ 0.0
2 S- 0.011
3 NC
4 S- 0.001
5 D+ 0.002
I have those values and the cable going to BL is plugged.
I touched at the same time pin 1 and pin2 and I had backlight and image on the screen, like the tv it is perfectly working.
Attached Files