MacMini m1 - 820-02091 - short line

[Palhano]

My Mac is dead. I tested the power supply and I have 12V.

Based on some videos online, I found a short circuit in a line that seems quite common to the problem, but I don't have a good circuit board to identify which line it is and there's no schematic.

I removed a resistor to reduce the area of the short circuit (marked in the image). The small capacitors around the chip are shorted (in 0.007 diode mode). I tried injecting 1V, but nothing heats up. I've looked at it for hours under a microscope and can't find any visually damaged components.

Any suggestions?

 

[2informaticos]

The layout around PMICs should be similar with MacBook boards.
Be aware, not any low reading means short; depends which power rail is there.

 

[Palhano]

It was a small capacitor around the chip. Injecting 1V and using alcohol, it boiled slightly; it was barely visible under a microscope.

 

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