A2338 M2 820-02773 5v 0.10ma

Hello,

I've got this board that stopped working after, that's what the customer has reported, the trackpad stopped clicking.
Board looks pristine, no liquid damage that I can spot.
I was getting 20V 0.01A with battery plugged in.
Without battery, I am now getting 5V with 0.1A current drawn.

Here are some readings:
PPBUS_AON = 12,3v
PP3V8_AON = 3.8v
PP5V_AON = 5v
PP1V8_AON_MPMU = 1.8V
PP1V8_AON_SPMU = 1.2V
PP1V2_AON_MPMU = 1.2V
PP1V2_AON_SPMU = 1.2V

One thing that worries me is that the only part that warms up is U1950 which is the SEP EEPROM

What else can I check from here please?

Check diode mode to ground on all secondary voltages.
Test the board alone on the desk.

Is the machine recognized in DFU mode?

Yeah no, I already checked to see if the board was in recovery mode and it’s not.

The measurements are done with the board alone, out of the case.

All other M/SPMU LDOs are present?

If isn't recognized in DFU, you may have problems with CPU.

Just in case, compare diode mode readings around UF400/500 with good board.
Check their LDOs with charger alone.