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My Apple Cinema Display just stopped working on new Mac Pro

I have a new Mac Pro (2013). It's teriffic, but all of a sudden, for no particular reason, my 27" cinema display just stopped working! The computer boots up like always, the thunderbolt cable, USB cable, and power supply are all plugged in (as before, when it was working this morning - and I've changed USB ports and outlets just to make sure it wasn't that problem) and no joy. The computer boots up, but the display remains off (black screen). Any suggestions?

Mac Pro (Late 2013), OS X Mavericks (10.9.2)

Posted on Mar 24, 2014 8:38 AM

Reply
1 reply

Mar 26, 2014 12:19 PM in response to FWBurr

Hello FWBurr,


It sounds like your cinema display is not showing an image anymore when the computer it is connected to is turned on. I recommend the troubleshooting from this section of the following article named:


Apple computers: Troubleshooting issues with video on internal or external displays

http://support.apple.com/kb/ht1573

When using an external display be sure to check the following:

  1. If you're using an Apple notebook, confirm the AC power cable or adapter is securely connected to the computer and the cable providing power to the display is also secure. It is always good to have your notebook connected to AC power when an external display is in use.
  2. Confirm display adapters are fully seated in their respective connections and that they are supported models and for the computer and display. Refer to these articles to assist you with adapter compatibility and further configuration information:
  3. Remove all display cable extenders, KVM switches, or other like devices and retest to determine if the issue is resolved.
  4. Try unplugging the video adapter or cable and then plug it back in.
  5. If more than one video adapter is in use (or "daisy-chained"), troubleshoot by using only one adapter.

    Example: A mini DisplayPort to DVI adapter connected to a DVI to HDMI adapter is an unsupported configuration because there is a series of adapters in use.

  6. If available, try using a different display and or adapter (or use a different connector by using DVI instead of VGA, for instance).

Reset the systemYou can reset the Mac's parameter RAM and SMC.Reset the resolutionStart by resetting the Mac's parameter RAM. If the display does not come up, was previously set to an unsupported resolution, and still results in no video:

  1. Start up in Safe Mode.
  2. From the Apple () menu, choose System Preferences.
  3. Choose Displaysfrom the View menu to open the preferences pane.
  4. Select any resolution and refresh rate that your display supports.
  5. Restart your computer.


Thank you for using Apple Support Communities.

Take care,

Sterling

My Apple Cinema Display just stopped working on new Mac Pro

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