820-02020 Short between PP3V8_AON_MPMU_ISNS_VIN <->PPVDD_PCPU_AWAKE. U8100 dead?

[it-solve]

Hi Guys, this board had liquid damage after cleaning and removal of a bunch of burned PP3V8_AON_MPMU_ISNS_VIN filter caps, it turned on.
But now it's stuck at 5V 0.01A and I measure short (0.55Ohm) between C81D7 and C81H1. Seems to be in/out of the U8100.



Anything else I can do? I have a donor board from where I may be able to get U8100, but seems an awful work without a stencil. Also not sure if that's performant there.



Anything I can check?

Thanks

 

[2informaticos]

Very likely not worth to continue.
I bet liquid spill caused more damage; overvoltage probably occured on the PMU power rails.

 

[it-solve]

That's awful, was hoping when it turned on. There is still no known way of recovering data on Mac after 2018 isn't it?

 

[2informaticos]

No way, as Apple doesn't provide a Lifeboat connector anymore.

 

[piernov]

M1 needs to be working anyway since it contains encryption keys. You can still try to replace U8100, if you're very lucky M1 may be fine.
But first you can try to remove L8100/L8101/L8102 one by one to try to isolate the phases if there is only one shorted.