SOLVED: A2442 820-02098 - Spilled liquid. 20V 0.004A - Turns on the loading screen with accounts and power cycles multiple times

[it-solve]

No heat signature, dead cold.

First connected its power cycles to 20V 0.16A - loads the system, power cycles then repeats.
Seems like it cuts off at some point, but can't detect any shorts around CD32s and major lines.

liquid impacted areas are:
LP800
UG800
UH802/908
U2020
CE501/515
JH500 and slightly around UG400 but can't detect any shorts or corroded parts there.

Where shall I start?

 

[2informaticos]

If no important data, go for DFU restore; else, revive.

 

[it-solve]

No luck in reaching DFU mode. Followed the guide and also tried different macs in case.

 

[2informaticos]

Did you try wire method on DFU pads?

 

[it-solve]

havent heard of that. Do yu have a link?

 

[2informaticos]

https://logi.wiki/index.php/DFU_Mode_Restore_(Macs)#100.25_direct_DFU_mode_using_jumper

DFU Mode Restore (Macs) - LogiWiki

We have Apple MacBook and iPhone Diode readings and general fault finding information compiled by the leaders in this area

logi.wiki

 

[it-solve]

None of the DFU attempts succeeded. Maybe not DFu issue?

What I get now is it goes 20V 2A while charging the battery.
Since it's charged it makes the ding noise like charging the Mac and stays at Goes 5V-20V 0.01A and resets the USBc meters, then dign again and repeats 3 times until settles on 5V 0.001A

 

[2informaticos]

Possibly accumulated crap under some BGA chips...

 

[it-solve]

Thanks @2informaticos as always straight to the spot.
UC resolved the issue. Additionally, reballed UG800 in case, as there was a liquid indication around it.