Comments on: Apple Cinema Display Broken or Won’t Turn On

By: siva

siva — Fri, 23 Apr 2010 06:50:43 +0000

I tried the tweak you have said in this blog, but it doesn’t work. The other thing is I tried connecting my room mates display to my macbook and it detects it with ease! Let me know what I should do. How do I return this to Apple if this is the case. Any help would be greatly appreciated.

By: siva

siva — Fri, 23 Apr 2010 06:41:18 +0000

Hi Dan,

I got my new 13” macbook pro and 24” LED Display today. However, my display stays just black whatever I do! I am seriously getting shit pained with this. Is there any power on button on the display which I am not turning it on? The power however gets supplied from the display to the macbook pro when I connect the magsafe connector from the display to the macbook. Am I missing something really stupid. Any help would be of great help!

Thanks

By: Dan

Dan — Mon, 22 Mar 2010 19:38:15 +0000

That file is used by the PMU to manage various tasks that have to do with Sleep, spinning down the hard drive etc.. The fans are more controlled by the internal temperature of your computer. If it gets too hot inside, it speeds up the fans to cool things down.

By: macdummy

macdummy — Mon, 22 Mar 2010 19:23:16 +0000

Hi Dan,
Thanks so much for sharing your knowledge.
One question, is the com.apple.PowerManagement.plist
file important? Now I don’t see one any more.
I did as instructed, except i just deleted it myself instead of using your applet.
Now my display works but the fan on my power mac is running up and then slowing down.
I don’t know if its related to the file.

Thanks again
Power Mac G5 Dual 2.5Ghz, 2.5GB Ram. OS 10.4.11
20″ cinema display

By: AutumnRays

AutumnRays — Thu, 11 Feb 2010 14:34:48 +0000

How do i connect my imac computer (the screen won’t come on) to my mac book pro to fix it?

By: xloki

xloki — Sun, 31 Jan 2010 19:27:12 +0000

Hi,
I have the same pb with ACD 23″, and macbook pro core duo (very old model, before core 2 duo).
unfortunately, your hack doesn’t work with this model
i suspect your solution is linked to one i’ve read, that says to change the setting of

System Preferences > Energy Saver > Graphics > Higher Performance

but this setting doesn’t exist on my macbook pro

if someone has a clue, hhhhelpppp !!!
thanks anyway

By: Leon_Starr

Leon_Starr — Sun, 24 Jan 2010 18:51:18 +0000

I have a 2007 macbook pro with an Atlona adapter and the LED display. Not doing the clamshell thing as I like to use both displays simultaneously. Initially, I couldn’t get the LED to wake up at all. Your fix worked first time and I didn’t need it to use it again for several days. I’ve had to reapply it twice now since the last security update (1/22/10). But it still works every time. Thanks for the script!

By: adriancb

adriancb — Wed, 20 Jan 2010 18:58:27 +0000

Hi Dan
Checked out a fair bit over this problem. Did the latest Sec’ update and here we go again, no monitor! System is Mac pro 2.8ghz 8 core with 23 incher mac screen. Twas a couple of updates ago the monitor stayed black on boot, did come back after 2/3/4 boots – but you wonder, card, screen, power supply and of course your brain cell.
Just done you fix and reboots were fine- no problems.
Many thanks
Adrian CB

By: Dan

Dan — Wed, 13 Jan 2010 01:00:36 +0000

I just thought of something else that could help you. Make sure you’re looking in the right Library folder. There are at least two on your machine. One is found on the root of the your hard drive. The other is in your User folder. You want the one on the root of your hard drive.

By: Dan

Dan — Tue, 12 Jan 2010 12:46:06 +0000

One more thing to try, unplug the apple monitor from the wall outlet, wait a few seconds then plug it in again.

I had the Apple Display for about two weeks trying various things to get it to turn on. I was always able to get it to turn on again, but I decided to return it and get a Samsung. No problems now.