1 Reply Latest reply: May 15, 2013 6:12 AM by sterling r
bfandrick Level 1 (0 points)

I have a MacBook Air 13 in non-retina mid 2012 and a 2011 Viewsonic VX2753 MH-LED 27" monitor. The monitor worked fine with my 2008 MacBook Pro but does not respond when I connenct to my MacBook Air when connenect using the HDMI port with a thunderbolt adapter

MacBook Air, OS X Mountain Lion (10.8.3), Monitor Viewsonic VX2753 MH-Led
  • sterling r Community Specialists (6,590 points)

    Hello bfandrick,


    I was looking through our resources for information that may help you troubleshoot the issue you are experiencing and have found a great article for you. It is named Apple computers: Troubleshooting issues with video on internal or external displays and can be found here http://support.apple.com/kb/ht1573.



    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. 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.
    5. 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.