820-3332 no keyboard, then no backlight

[2click]

Hi I have this board which was liquid damaged by customer, first it didn´t turn on, then it turned on and had no trackpad or keyboard, now I changed U5701 / Q5701 / U5750 and have a working keyboard/trackpad but no backlight... I even have PPVOUT_S0_LCDBKLT at 55v, but no backlight, just get the image in the back...

 

[2informaticos]

55V on backlight output, means the LEDs strip connection is lost.
Bad LEDs strip, video cable, or LCD connector.
Try known good LCD assembly first.