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TS4045: LED Cinema Display (24-inch, Late 2008): Intermittent flicker while connected to a Thunderbolt port

Learn about LED Cinema Display (24-inch, Late 2008): Intermittent flicker while connected to a Thunderbolt port

TS4045 Cinema HD Display 23" won't turn on to a Thunderbolt port

1869 Views 4 Replies Latest reply: Jun 12, 2013 7:32 PM by rogerpan RSS
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Jun 7, 2013 6:23 PM

I had Apple Cinema HD Display 23" on my 2011 MBP 15" with Thunderbolt to DVI adapter and it work since first day put on my MBP 15".


It quit to turn on since March 2013 on my 2011 MBP 15", power fine, USB fine, it just won't turn on.


However, I use Cinema HD display DVI adapter connect to my old MBP 17", it turn on normal, everthing fine.


I really like my 23" Cinema HD Display back to my 2011 MBP 15".


Any ideal where go wrong on my 2011 MBP 15".

  • pedro d Community Specialists Community Specialists (1,510 points)

    Hello there, rogerpan.


    The following Knowledge Base article provides some in-depth instruction on troubleshooting Cinema Display:


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


    Although the entire article provides very useful information, you may want to review the following section in detail:

    No video or no signal, image distortion, "snow," or flickering

    Check connections

    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 system
    You 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 Displays from the View menu to open the preferences pane.
    4. Select any resolution and refresh rate that your display supports.
    5. Restart your computer.

    Thanks for reaching Apple Support Communities.



    Pedro D.


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