820-3115 no backlight

[Kyle93]

Arrived with liquid damage all around lcd connector and other side of the board. Replaced everything. Powers on, chimes but no backlight.

J9000 pins 2 and 3 are 3.4v pin 4 3.4V

U9701 replaced but feedback TP was burned. Ran jumper to PPBUS_SW_LCDBKLT_PWR but still no backlight and diode mode is .408

What to check next? Using a known good screen

 

[2informaticos]

I like to believe you already checked F9700.

Do you have FOR SURE good contact between A5/U9701 and K/D9701?
R0910 is OK?
Tried few PRAM resets?

Post BKL_EN/PWM levels.