820-02098 shorted PPBUS_AON_SPKRAMP_ABC_ISNS but nothing heats up even with 10w of power

[Sirovensky]

Pretty much the title. I have a m1 pro macbook that has been liquid damaged. One of the caps on PPBUS_AON_SPKRAMP_ABC_ISNS blew, leaving a layer/two under it damaged. After removing the cap, i found that the line is still shorted and was heating up where that cap was. After grinding away some of the carbon and whatnot, i still have a short but now nothing heats up, even with 10w of power being dumped into it. I am at a loss. No, the cpu does not heat up even after some time, so im really not sure where to look.

Attached: thermal video(link to youtube), image of the blown area.

Thermal m1pro

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[Sirovensky]

P.s. The video appears to be pretty blocky but on the thermal camera screen it looks way better and i am still pretty sure i am not missing anything.

 

[2informaticos]

First of all, welcome to the forum!

What is the exact ohm value of the short?
How are you sure that actually inject 10W there?

 

[Sirovensky]

Thanks for the warm welcome!
It is 3.15. Meter probes are 0.3, so 2.8ohm would be the actual resistance of the line
I have a dc power supply, set to 3v, and it does 0.9v11a or so after i touch the positive pad where the cap was(no i didnt set it to 10a right away, cracked it up after i didnt see anything) (or the adjecent pad of a cap, made sure its on the same net and im touching the correct side). I also see in the thermal image that the probes are warming up and the probing points too. I found that RD503 heated up slightly(not 10w worthy of heat) but i couldnt see anything else.

 

[2informaticos]

Use ticker cables to inject voltage.
You must heat the board, not the cables.
Also use powerfull lab PSU and set amp limit to max first.
Then start to inject with 1V; increase, if needed.

If PSU gets in limitation mode, may not inject anything.
If it supports CC mode, that helps.