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Random shutdown on 2015 iMac 27-inch Retina

Gang,

A few weeks ago, my iMac started randomly shutting itself down. No overheating, no fan issues, just a shut down for seemingly no reason. Tried different power cords and outlets, but the problem persists.

It's two years past AppleCare, but research is pointing toward a bad power supply.

Have other folks here had this issue? Does Apple do anything about it when the machine is out of the warranty period?

My thanks in advance!

iMac with Retina 5K display, macOS 10.14

Posted on Aug 1, 2020 11:26 AM

Best reply

BDAqua

Level 10

239,375 points

Posted on Aug 1, 2020 4:03 PM

Out of Warranty, very, very rarely. :(

You can save us asking dozens of questions by submitting a report from this App for us to look at…

EtreCheck is a FREE simple little diagnostic tool to display the important details of your system configuration and allow you to copy that information to the Clipboard. It is meant to be used with Apple Support Communities to help people help you with your Mac. It will not display any personal info.

https://www.etrecheck.com/

Pastebin is a good place to paste the whole report if you capture the URL while there…

https://pastebin.com/

Whew, they've changed pastebin & made it harder, but after pasting in, click Create new paste button, then Embed button, then copy the URL...

The important part is...

https://pastebin.com/embed_js/KuvnghqA

Workable but harder for me to work with...the Note tool on the bottom of this editor's toolbar, as shown in the image, to copy and paste the output from EtreCheck. In a Reply before you click post, look for this to add longer texts...

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Random shutdown on 2015 iMac 27-inch Retina

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