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Screen goes black

My iMac starts up normally but after a few minutes the screen goes black. All other functions continue normally including an ongoing FaceTime chat.

iMac 27″, macOS 10.13

Posted on Jun 3, 2020 7:35 AM

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Posted on Jun 3, 2020 7:45 AM

First try resetting the NVRAM and also restarting in Safe Mode. Please report back with results.


How to reset NVRAM on your Mac

Use safe mode to isolate issues with your Mac

8 replies

Jun 3, 2020 9:09 AM in response to den.thed

I don't think I have these third-party apps. The problem syarted a couple of days ago, when the screen went black after about half an hour of use. Since then the "live" time has got progressively shorter--now a few seconds. My guess was that it was a temperature sensor malfunctioning. In any event it looks like a hardware isssue.

Screen goes black

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