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iMac (27-inch, Mid 2010) screen going black every now and then

L

Lampekap

macrumors member
Original poster
Oct 28, 2021
34
75
My iMac (27-inch, Mid 2010) with ATI Radeon HD 5670 512 MB screen is going black every now and then. Usually when the brightness is higher than 6 bars. When pressing cmd+f2 2 times, it goes back to normal. When I reduce the brightness to 2 bars it stays normal for a longer time. What can I do to solve this problem?
 
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