SOLVED: 820-01700 - 20V 0.17A after liquid damage. Short on PP*_SLPDDR & Heat signature on T2

[it-solve]

Hi Guys, this A2141 820-01700 came with liquid damage on 2 spots only:

C6466/6452 - PPBUS_G3H_SPKRPAML - 12.6V - 0.39
C9580 - PPBUS_g3H_SSD0_SNS - 12.6V - 0.39

The only short I located apart from than CPU Phase lines is on
PP0V9_SLPDDR - 0.049
PP0V82_SLPDDR - 0.032
PPVDCPU_AWAKE - 0.010

There is a heat signature on T2 when power is applied where the current goes 0.01A - 0.17A - 0.01A

 

[2informaticos]

There are the readings I got from good board:
L7806-09 018
L7811/12 047
L7816/17 105
Is normal to have differences with other board, but 049 looks to low, comparing with 105.

Check diode mode at L9520/80 too.

 

[it-solve]

L9520 - 388
L9580 - 410
L7811/12 - 063 - Probably okay?

 

[2informaticos]

Do you get all SLPS2R and AWAKE voltages?
Also check SSD and G3S voltages.

 

[it-solve]

SLPS2R - 0.8, 1.1, 1.8present
PPVDDCPU_AWAKE - 0.5V - is it low?
PPVDDCPUSRAM_AWAKE - 0.8V
AWAKE -1.2, 1.8, 3.3

PPBUS_G3H_SSD0_SNS - 12V
PP2V5_NAND_SSD0 - 2.5V
PP3V3_G3H_SSD0_SNS - 3.3v

 

[2informaticos]

DFU tried, is recognized?

 

[it-solve]

Thank @2informaticos this resolved it. Not sure how liquid damage is related to DFu corruption. :/
The minute I start pushing into DFU mode and the meter connected to the top left port, it starts pulling above 2A and charging the battery.
Fallowed this - https://iboysoft.com/wiki/dfu-mode-mac.html and did Restore from this - https://support.apple.com/en-au/guide/apple-configurator-mac/apdebea5be51/mac

Wiped the data but that's fine. Now I need to replace the keyboard.

Has anyone tried these screws for keyboard replacement on new macs? These ones I have are a bit long and the keyboard profile sags.