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Random sleep mode on iMac (Retina 5K, 27-inch, 2017)

ham-gibi

ham-gibi

macrumors newbie
Original poster
Apr 11, 2020
1
0
Hi,
For the last week I have a problem, where my iMac even when I am surfing or typing goes in random sleep mode (black screen). After typing on the keyboard, the mac wakes again like it was in sleep mode, so it is not crashing, just a black screen. Does anybody have an idea, what this problem could be?

Mac OS Catalina 10.14.4
iMac (Retina 5K, 27-inch, 2017)
4.2 GHz Quad-Core Intel Core i7
16 GB 2400 MHz DDR4
Radeon Pro 580 8 GB

Thanks folks
 
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