Q: imac 27 black screen
Hello,
I've bought my imac in december 2011 :
- imac 27 mid-2011
- 2,7 Ghz intel core i5
- AMD radeon 6770M
Everything went perfect until september 2014, i was working on a montage movie for my friend's wedding when the screen suddenly went black.
I restart the system few minutes later and finish my work without problems.
From september 2014, it's getting worst and worst and now most of the time i don't see the login screen. If i put a flash light in front of the screen, i can see that the screen is on but unfortunately dark.
I have called few times apple support who try to help me even if my guarantee was over. We try to reboot SMC, PRAM but the problem is still there.
Hard for me to diagnose the problem, i would like to get help if someone encounter this problem too and what i can do to use my mac again.
Thank you for your help.
iMac (27-inch Mid 2011), OS X Mavericks (10.9)
Posted on Nov 15, 2015 8:31 AM
Several days ago it started happening to me. I read everything I could find ... one thread was 17 pages long. The best I could do was run it at 20% brightness. If I got bold and tried to nudge it a bit higher ... <POOF> ...
But, just as a wild guess and maybe in frustration I jammed (in one nanosecond) that *!&*^#% screen brightness slider (not the brightness button on the keyboard) to full 100% brightness. And nothing happened! It stayed on, and that was several days ago. The next day I tentatively lowered it to about 80% (where it had been set for a couple of years) ... and all is well so far. Try it. Nothing to lose.
Posted on Dec 13, 2015 7:49 AM