brianjb
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Q: I am having issues with video output using HDMI to HDTV on Mac Mini

I have a new Mac Mini.  My monitor is a Vizio M260VA.  Occasionally while working, the TV will display nothing.  Sometimes the video comes back right away.  Sometimes not.  Sometimes I have to disconnect the Vizio and hook up a regular Dell monitor.  That sometimes works.

 

What is going on?

 

I have adjusted my power settings to never turn off computer or display.

 

This morning, I came in the office and there was nothing on the TV.  I tried to unhook the HDMI cable, hook up the Dell, nothing.  I had to turn the computer off by pressing the button. I don't like to shut it down this way.

 

Is there a known issue with video out via HDMI port? 

 

BTW, I am getting a USB to HDMI adaptor today to connect a second HDTV. 

Mac mini, OS X Mavericks (10.9.4)

Posted on Aug 20, 2014 5:17 AM

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brianjb

Q: I am having issues with video output using HDMI to HDTV on Mac Mini

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  • by braden85,

    braden85 braden85 Aug 22, 2014 10:17 AM in response to brianjb
    Community Specialists
    Aug 22, 2014 10:17 AM in response to brianjb

    Hi brianjb,

     

    Here is an article that can help you troubleshoot this issue with your external video output:

     

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

    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. 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.

    Take care, and thanks for visiting the Apple Support Communities.

     

    Cheers,

    Braden