A2159 (820-01598) liquid damage, PP5V_G3S power cycles to 5V

[Fyo]

So, connected to computer USB, input showing 4.91V, 0.3955A stable.

PPBUS_G3H 12.26V stable
PPBUS_HS_CPU 12.26V stable
PPDCIN_G3H 4.69V stable
PP20V_USBC_XA_VBUS 4.87V stable
PP3V3_G3H_RTC 3.30V stable
PP3V3_G3H 3.23V stable
PP3V3_AWAKE 3.23V stable
PP1V8_AWAKE 1.8V stable
PP1V2_AWAKE 1.2V stable
PPVDDCPU_AWAKE 0.75V stable

PP5V_G3S 0.0V no pulse
PP3V3_G3S 0.0V no pulse
PP1V8_G3S 0.0V no pulse
PP1V2_S3 0.0V no pulse
PPVCCGT_S0_CPU 0.0V no pulse
P5VG3S_CSP1 0.0V no pulse

I don't know what the behavior should be on 5V and no battery, but I think it's okay it doesn't allow boot (correct me if I'm wrong).

 

[2informaticos]

Test the board alone on the desk; nothing connected, apart of charger.

 

[Fyo]

I'm doing all testing since the beginning with the board only.

 

[2informaticos]

Machine can go into DFU with 5V from other machine; the one with AC2 installed.
Connection must be done through dedicated USB-C port.
You can use SE032 pads, to force it in DFU without keyboard.

If you connect normal USB-C charger, it should boot directly.

 

[Fyo]

Weird, I can't get any sign of life.
I tried USB-A to USB-C, both ports, with and without plugging charger in. Also tried connecting SE032 pads.
Then tried USB-C to USB-C (12" Macbook Retina), with and without charger, SE032 pads.

 

[2informaticos]

Did you get PPBUS_G3H and all AWAKE and SLPS2R voltages?

 

[Fyo]

Yes. What I meant by "no sign of life" was on the USB. Nothing shows up in AC2.

 

[2informaticos]

SE032 pads are usually used in case of no charger, only connection to AC2 machine.
If charger is connected, should go into DFU with keyboard, or SE032 pads.
There must be something wrong with T2, or corresponding USB-C port.

 

[Fyo]

Does the entire metal shield have to be removed to see the T2 or is it partially open when the black sticker is removed?