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françois230 Author

Level 1

15 points

Mac Studio M2 won't boot - led flashes once

I have the same problem as the one described in this post: Mac Studio M2 won't boot - led flashes on… - Apple Community

The “Me Too” count is currently at 29 but there are no fixes available.

My Mac Studio will exhibit this behavior randomly: there will be cycles where I will be able to boot up successfully and cycles where I will not. The transition between those two states is a mystery.

It’s not linked to any external devices or specific plug, it’s quite capable of doing it on its own.

Apple has already changed the motherboard but I believe this is not where the problem is.

The problem happens specifically at boot time, something fails (or not) after the led flashes once.

If the boot process is allowed to continue then I hear the chime and it’s smooth sailing afterwards.

I am bringing it again today to iCare.

Any help would be appreciated.

Posted on Sep 2, 2024 8:37 PM

Top-ranking reply

Grant Bennet-Alder

Level 10

133,321 points

Posted on Sep 7, 2024 6:43 AM

if they have replaced the main logic board, you are still using the same power supply board.

On the old Mac Pro, they way you discharged the power supply Voltage capacitors to get to Zero Volts inside was the remove the AC power cord, then press the power button for a few seconds. Doing that might get you ready for the next trial of your experiment more quickly.

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