A1990 820-01041 no backlight with 55V on line

[BCN_Techs]

Hi,

No water damage, no visible bad component.

There are 55V on PPVOUT_S0_LCDBKLT and continuity to PIN 43 from C8460/61/62...

Already tried with new flex and 2 good know lcd panel. No way, there is no backlight on display.


Thanks

 

[2informaticos]

Try DFU revive.
If still the same, save data and do restore.

 

[BCN_Techs]

worked, thanks