820-2614 no image/backlight

[ajdoc]

No liquid damage.
No image/backlight on LCD.

When internal LCD is disconnected all works fine on external monitor.

J9000/38-40 @ 0.0V (because there is no image)
J9000/4 @ 3.3V
J9000/2-3 @ 0.0V

L9000 0.0V on both sides.

U9000/1 @ 0.0012V
U9000/2-3 @ 3.3V

R9094 got correct resistance
R9678 got 0.0V on both sides.

Any idea?

 

[2informaticos]

Any history fault available?
Did you try known good LCD and video cable?

"820-2614"
Are you sure?
I cannot find any schematic with this code...