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I have a Mac Mini late-2012 A1347 that will not power on. I've tried the steps to reset the SMC (unplug-wait 30s-plug-wait 5s) and still nothing happens when I press the power button. No chime, no nothing.

How can I tell if it is something as simple as replacing the power supply with something like this:

https://www.ifixit.com/Store/Mac/Mac-mini-A1347-Late-2012-Late-2014-Power-Supply/IF171-017?o=1

I'd rather not go to an Apple store or repair shop if I can avoid it.

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  • Honestly without the right test equipment (like a multi-meter at a minimum) and the knowledge on how to use the test equipment to diagnose the issue, you can't. If you can return the power supply after installing it I would go ahead. Otherwise it is just an educated guess. – Steve Chambers Dec 14 '20 at 15:52
  • I’ve got a DMM... – michael Dec 14 '20 at 16:00
  • Assuming you know exactly what to test and how (I don't) you may be on your way. But detailed electrical troubleshooting may be out of scope of AD and nearly impossible to do unless all you need is pointers to reference material. – Steve Chambers Dec 14 '20 at 16:13
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I found this page:

https://www.ifixit.com/Answers/View/571061/Complete+Dead+-+How+To+Check+Power+Supply+Vs+Logic+Board

There was a correct DC voltage on each of the pins, so I believe the problem is elsewhere...

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