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Mac Mini (2012) HDMI losing sync (blank screen/snow)

80362 Views 429 Replies Latest reply: Jan 28, 2014 11:51 AM by jurre-j RSS
  • BobH47 Calculating status...

    I bought the Mini in my local Apple store in the UK and, following three calls to Apple Care, exchanged it after a week (I hadn't even read this at that point). Needless to say the replacement had an identical fault. I read this thread and as a result I telephoned the manager of the store and in response to his question as to what I would like him to do, I suggested a TB to DVI adapter which was identified in this thread as a work-around. He immediately agreed and one arrived by courier mid-morning the following day.

     

    I was very polite, it wasn't his fault and I wanted him on my side.

     

    I hope it works for you.

  • BobH47 Level 1 Level 1 (10 points)
    Currently Being Moderated
    Nov 30, 2012 9:14 AM (in response to DPoun)

    That was going to be my next ploy, but isn't that delayed now?

  • DPoun Calculating status...
    Currently Being Moderated
    Nov 30, 2012 9:15 AM (in response to BobH47)

    Not sure, but even if it is delayed, surely its worth waiting for since these things aren't cheap and we as consumers expect something that is fit for purpose.

  • BobH47 Level 1 Level 1 (10 points)
    Currently Being Moderated
    Nov 30, 2012 9:17 AM (in response to DPoun)

    What, like a mini?

  • Jwheezy123 Calculating status...
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    Nov 30, 2012 9:21 AM (in response to .Bunny)

    I'm also having the same problem.  I bought my new MM on Sunday, had the issue from the first time I turned it on. I exchanged it on Tuesday and the new unit had the same problem!! 

    I called Apple support last night and the tech at first said he didn't know about the issue, then after putting me on hold for a couple of minutes told me using the Thunderbolt display port may work.  He also said they were working on an update, but had no idea when it would be ready.  Also, he DID NOT give me a new adapter, how did you guys go about getting one? 

  • DPoun Level 1 Level 1 (0 points)
    Currently Being Moderated
    Nov 30, 2012 9:21 AM (in response to BobH47)

    Actually, on a side note, did you have to calibrate your colour settings when you connected for 2012 Mac Mini to an HDMI monitor?

     

    I found that the colours were completely saturated and nothing like my 2010 Mac Mini which was awesome, just lacked the power (hence my decision to go for quad core i7!)

  • BobH47 Level 1 Level 1 (10 points)

    For getting an adapter please see my post at the top of this page.

  • BobH47 Level 1 Level 1 (10 points)
    Currently Being Moderated
    Nov 30, 2012 9:29 AM (in response to DPoun)

    For about eighteen hours my Mini was attached to a TV by HDMI from the HDMI port at the request of Apple Care. I did not detect any funny colours and I didn't make any adjustments to the Mini. That is the Mini that I no longer have so please don't ask for my settings!!!

  • MyMac8MyPC Level 4 Level 4 (1,440 points)

    demicrown wrote:

     

    How did you go about getting a free adaptor?

    First you'll need to find a good Apple store, one that IS aware of this issue. Ask to speak to the manager. Bring them up to date about the mini HDMI defect. Let them know that you are willing to return your mini, but wanted to first try a different adapter before getting the refund. Let them know that other Apple stores are in fact giving customers the adapter at no charge to prevent the return. If you have a good Apple store then they should be more than happy to help you. You could also try calling Apple care.

  • MyMac8MyPC Level 4 Level 4 (1,440 points)
    Currently Being Moderated
    Nov 30, 2012 9:39 AM (in response to DPoun)

    DPoun wrote:

     

    did you have to calibrate your colour settings when you connected for 2012 Mac Mini to an HDMI monitor?

    If you're talking about washed out colors, then that's a separate issue not connected with the HDMI issue. You can almost always correct this by simply calibrating your monitor. System Preferences > Displays > Color > Calibrate. The more time you spend on it the better the results. You can also make a profile at that time. Hope it helps

  • kweevuss Level 1 Level 1 (0 points)
    Currently Being Moderated
    Nov 30, 2012 4:24 PM (in response to .Bunny)

    I talked to apple support again tonight, the tech I have been working with the last week or so said that the engineers have been getting a lot of tickets with the issue, and are working on a patch. I'm not the first to report this, but the more the better. Glad to see its moving somewhere. All of the people calling in defiantly helped!

     

     

    And just to let everyone know I'm in the US with a 2012 Mac mini server, using HDMI to DVI that came with it, and have received a few snow screens since purchase. 

  • DPoun Level 1 Level 1 (0 points)

    I agree, I called them last night just to that they had another ticket logged for the same issue.

     

    I bought mine from the USA and took it back to the Uk (works out about £170 $250 cheaper!) so I don't think it matters where it came from.

  • DPoun Level 1 Level 1 (0 points)

    I did exactly that and it looks way better.  I was just wondering if anyone else saw the same thing, I know it's a separate thing to the HDMI issue.  Didn't have to do it on my 2010 Mac Mini (nvidia 320m)

  • moonmich Calculating status...

    Same for me.  I have a late 2012 Mac Mini using HDMI only on a 1080p LED monitor.  Text is fuzzy, screen blinks in and out, goes fuzzy.  I'll try the HDMI to Thunderbolt converter, but I'm annoyed that I should have to.

  • Robert Hoffman Calculating status...

    Contact Apple....I did & they are sending me a Belkin thunderbolt to hdmi adapter @ no cost to me.

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