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Mac Mini 2012 video blinking out

I just got my 2012 Mac Mini yesterday (mid range model) and have already noticed three instances where the video would blink out for about a half second, and then come right back. This happend twice already when I'm connected to a Apple 23 inch LCD monitor via the included HDMI-DVI adapter and once when I'm connected via HDMI to my Samsung LCD TV. Anyone else noticing this happening on their Mac Minis? Thanks.

Mac mini, OS X Mountain Lion (10.8.2)

Posted on Oct 27, 2012 8:08 AM

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1,207 replies

Dec 11, 2012 5:18 PM in response to Hardhittinz

No, don't panic, if you read the article thoroughly, you will understand that this problem only occurs when you place a USB3.0 device (such as an USB3.0 external harddrive) directly on top of your mac mini, and start transferring data. (That's why I said "under some circumstances")

Or in the words of the article:

"the further away from the Bluetooth antenna the USB 3.0 device is, the less severe the interference."

So if you put your USB3.0 devices at a safe distance from the mac mini you don't have a problem.

If you insist on wanting to do that anyway, the shielding can be fixed following OWC guidelines.

Dec 11, 2012 5:34 PM in response to Hardhittinz

Hardhittinz wrote:

think il be ok with what i currently have?

You should be fine. If you do need to add extra shelding just know that there are different grades of shielding foil. You can save a lot of money and buy much better EMI tape by shopping around. One place to get high quality shielding is from 3M. For only 11 bucks you can get 18 yards of it, enough to last most people a lifetime.


http://www.alliedelec.com/search/productdetail.aspx?sku=70113191&gclid=CKjHttbXk 7QCFcxAMgod9kIAbw



There's more detailed install instructions here;


http://www.ifixit.com/Guide/Installing+Mac+Mini+Late+2012+AirPort-Bluetooth+Boar d/11709/1

Dec 11, 2012 5:34 PM in response to WhatOnEarth

WhatOnEarth wrote:


Yes, it fixes the blown out gamma problem. I did not have the blinking problem, but I did have the blown out whites ( couldnt see striped backgrounds in the Finder etc ). I applied the EFI update and now all is fine.

Anybody else who installed the EFI update can confirm this? Is this really fixed?

I went for a refund for two reasons: flickering and crushed light colors. The fix for this is equally important to me, but everybody's focussing on the flickering here... probably because this secondary problem is less obvious.

Looking forward to order a new MM, if most people report positive news from now on. :-)

Dec 11, 2012 5:44 PM in response to Hardhittinz

Hardhittinz wrote:


so before i shell out the cash does everyone think its a wise choice to go for the mini over buyin a new windows computer

You could write a book on all of the reasons why the Mac is better choice than a windows computer 😁


Once you go Mac, you never go back 😝


(plus you can still install windows on it if you want, so it's like two computers in one)

Dec 11, 2012 5:53 PM in response to Hardhittinz

Hardhittinz, I was in your position. Had mac for years, but Windows last decade or so. Not at all unhappy with my experience and I love my Mac peripherals almost as much as the mini itself: wireless keyboard, magic mouse, and trackpad. That last one is an amazing thing...Took me less than a few hours to feel fully at ease. What took me so long?


My recommendation, FWIW, get the mini, apply the updates immediately, then see how it works. If a few days later you're not happy, return it before taking the time to transfer all your stuff.


I doubt you'll have to return it. IMO.

Mac Mini 2012 video blinking out

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