820-3115 no backlight

[Kyle93]

Chimes but no backlight. 3.3V on pins 2 and 3 and 40V on pins 21 and 22. Can this be a bad U9701?

No liquid damage

 

[2informaticos]

40V means open LED strips.
Try full LCD assembly.
Be sure LCD connector is OK.

 

[Kyle93]

40v was with a tested full LCD assembly connected. LCD connector looks perfect

 

[2informaticos]

The correct voltage is aprox 25V.
40V means open LED strips!!!
There are 6 LED strips, each one 9 LEDs; one white LED requires aprox 2.7-3V.
Check all return resistors.