820-02899 don´t turn on.

[madrefoca534]

Hello everyone.
I have a 2020 MacBook Air, 820-02899, on my desk. no liquid damage

Stuck at 5 volts, 0.080 mA. Without the battery connected, with the battery connected, 20V, 0.0 amps.

This happens on both ports.

PPbus_AON 12.2V
PP1V5 1.51 V
PP3V3 UPC 3.3 V
PP3V3 S2 3.3 V

PP5V_2 0V, it's not shorted.

I measured the T2 coils and the chip, and I have all the voltages.

I don't have the corresponding schematic or Boardview, so I'm using both from the 820-02016 board.

thanks.

 

[2informaticos]

Apart of no liquid, customer said something about how problem appeared?
Do you get SSD voltages?
Any chance to enter DFU mode?

Sudden death may be caused by faulty SSD.