Chosen Solution
Hi All, I have a LED cinema display 24" and I decided to plug it in my new mid 2014 MBP15" retina and its not detected for video. Sound is working fine, iSight too but not screen. I decide to do the PRAM and SMC reset.Nothing Then Updated the firmware… follow all the discussions… nothing can make it work. So i decided to plug it back on my Mac mini but BIMMM it stays dark too. After reboot the screens turns on Apple logo and loading bar from yosemite then the screens turns off after 15-20sec the mac mini is an old model and is not thunderbolt i can’t copy/paste the setup as i can’t see it with the screen I’m wondering if there is anything I can do with it ? As im not under warranty anymore…
Try plugging it back in on your mini and then restart it. Now click on fn2 key to increase the brightness. Does it light up? If not press the fn1 key a few times so its at the lowest setting. Now hit the fn2 key once it you get a flicker? try again did you ever get a flicker? With a flashlight hold it against the screen at an angle (poor mans backlight) are you able to see a faint image of your desktop icons? Let us know what you find.
There will be no answer. Apple Mac Minis go blank after the screen saver operates. Then they will not recover. I know neither cause nor solution. I suspect that there is a hardware or firmware fault, as altering software (ie any settings at all) seems to have no effect. In any case, Apple will not acknowledge the issue. I work around this by turning the Mac Mini off and then back on again. richard horobin Canberra, Australia 2016
