e1Deus

Q: iMac 27 screen randomly turns off and on and the same thing appears while iMac connected to Macbook through mini-DisplayPort, help!

iMac 27 screen randomly turns off and on and the same thing appears while iMac connected to Macbook through mini-DisplayPort, help! The thing is neither in invertor LCD board nor in power supply board because i've already tested this boards from another fine iMacs with this one and it still turns off and on randomly after the macOS boots. Already formated the hdd and installed several OS's, the same thing - it's randomly turns off and on the screen. Need your help, thank you!

iMac, OS X El Capitan (10.11)

Posted on Sep 27, 2016 11:22 AM