Rissag
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Q: Cinema Display 23", MacBook Pro 13", display detected, LED on, black screen

I just received a second hand Cinema Display 23", and I tried to connect it to my MacBook Pro 13" which I purchased in late 2010. I'm currently running Mac 10.6.8, and I believe I have all the correct adaptors.

The display is detected, and the white LED light in on and solid, with no blinking, but the display itself is black.

MacBook Pro, Mac OS X (10.6.8)

Posted on Feb 20, 2015 3:47 AM

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Rissag

Q: Cinema Display 23", MacBook Pro 13", display detected, LED on, black screen

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  • by alex_h1,

    alex_h1 alex_h1 Feb 21, 2015 11:58 AM in response to Rissag
    Community Specialists
    Feb 21, 2015 11:58 AM in response to Rissag

    Howdy Rissag,

     

    Thanks for using the Apple Support Communities.

     

    If you're seeing no video on your Cinema Display connected to your MacBook Pro, then I'd like you to please follow the directions outlined below.

     

     

    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 resolution

    Start 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.

     

     

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

     

    No image on the screen

    • Make sure the computer is turned on.
    • Make sure the power cord is plugged in properly.
    • Make sure the display cables are connected to your computer properly.
    • Make sure the DVI or Mini DisplayPort display cable is connected securely.
    • Make sure your computer is not in sleep mode.
    • Make sure the brightness is set properly. The brightness control is under the right front edge of the display.
    • Check for and install all available software updates. Software updates may provide solutions to many common issues.

    If the display power cord is plugged into a grounded wall outlet or power strip, find out if power to the outlet has been interrupted. You can test the outlet by plugging in something that you know works, like a desk lamp or radio. 

     

     

    Get help with your Apple Cinema Display - Apple Support

     

    Take care,

    Alex H.