Skip navigation

Mac Mini 2012 video blinking out

153787 Views 1,193 Replies Latest reply: Mar 29, 2014 2:11 AM by knightshade91 RSS Branched to a new discussion.
  • MyMac8MyPC Level 4 Level 4 (1,440 points)
    Currently Being Moderated
    Dec 22, 2012 1:35 PM (in response to Tom Sheppard)

    Tom Sheppard wrote:

     

    All gear is plugged into a surge suppressor strip which in turn is plugged into an APC UPS.

    Using a APC UPS is great (I use one as well on my mini) and APC makes the best UPS around, so that's a big plus for your gear. However, just so you are aware of it, all surge strips use metal oxide varistors (MOV's) and they only last around 6 - 12 months. After that the power strip will still work but the bad MOV's will then cause spikes. If the surge strips are plugged into the UPS, then ironically you would be introducing the same spikes that the UPS was trying to remove. Best to use an A/C splitter similar to this;

     

    http://www.microcenter.com/product/217389/Power_Extension_-_Splitter_Y_Adaptor_P owercord_Cable

     

    That will keep your power signal pure coming from the UPS.

     


    Tom Sheppard wrote:

     

    Most likely they'll just tell me to swap for another mini.

    I agree, but that's not actually helping to trace down the problem. If possible I would at least make sure they setup the replacement mini in there, before you bring it home. 

  • mfearby Calculating status...
    Currently Being Moderated
    Dec 22, 2012 2:42 PM (in response to Tom Sheppard)

    My TB port died when the Mini went to sleep as well, so I then tried disconnecting/reconnecting it to no avail (didn't think it would be bad to do so with it switched on), but in any case, if it was already dead, then the damage was done. However, several days later I decide to try it again and it decides to work.... for a day, then die again (after I had disabled sleep entirely). I try all sorts of things (different cable, using my brother's calbe/monitor) and cannot get it to work. Then, when I went to wipe the disk to return it for a refund, the TB port decides to work! I was also experiencing the blackout screens and the snow so I have no handed it over to TNT who are taking it back to Apple for a refund. The Late 2012 Mini is jinxed, unfortunately. I'm now using my brother's Mid 2011 that I bought off him so he could buy an MBP 15" Retina. I might upgrade to a Mac Pro when it's refreshed in a few months' time, but something tells me I should wait for the mini-refresh after that when the bugs have been ironed out.

  • Tom Sheppard Level 1 Level 1 (15 points)
    Currently Being Moderated
    Dec 22, 2012 3:41 PM (in response to mfearby)

    mfearby wrote:

     

    My TB port died when the Mini went to sleep as well…

    I didn't mention it because the story gets long, but I had left both monitors connected even though the Tb port had died. One time the Tb port came back to life and the video ping-ponged back and forth between the two video ports every second or so until I unplugged the Tb monitor and then it died and never came back to life again, at least until I returned the mini.

     

    mfearby wrote:

     

    The Late 2012 Mini is jinxed …

    Well, the two of us certainly haven't had good luck. I can't afford a Mac Pro and even the 27" iMac with i7 and Fusion drive is over twice the price of the mini, so I really don't know what I'm going to do if I have to return this unit.

     

    My 2008 MacBook is almost like a new computer now that I've rolled it back from Lion to Snow Leopard. Lion was such a pig even though I had the MacBook maxed out with 4 GB of RAM. I'm wondering if I should just sit tight until the next mini revision in a year. But, the mini is second from the bottom of the priority list for Apple with the Mac Pro being almost forgotten about. Apple's focus is on iMacs, MacBooks, and iOS devices. It's going to be a tough decision.

  • markvanderwerff Calculating status...
    Currently Being Moderated
    Dec 22, 2012 4:28 PM (in response to KevCheng)

    Hey,

     

    Returned mine for a new one. No problems for 3 weeks. Today i saw the same thing happen again and i have installed the efi firmware update. The problem reoccured after the update. Using minidisplayport to dvi converter. Now using the hdmi to dvi converter. Also ik had the 'blinking out' whilst running windows 8 bootcamp.

     

    Bummer.

  • BDAqua Level 10 Level 10 (114,715 points)
    Currently Being Moderated
    Dec 22, 2012 8:41 PM (in response to Tom Sheppard)

    My 2008 MacBook is almost like a new computer now that I've rolled it back from Lion to Snow Leopard.

    Indeed, but ML/10.8 has a few things better than 10.7... still no Tiger/10.4.11 though!

  • Tom Sheppard Level 1 Level 1 (15 points)
    Currently Being Moderated
    Dec 28, 2012 11:42 AM (in response to Tom Sheppard)

    Update on my second mini with a dead Thunderbolt port after second visit to Genius Bar …

     

    Recap:

    • First mini's Tb port died within a week.
    • Genius at Apple Store refused to look at it saying it was a common problem.
    • Returned for refund.
    • Waited until firmware update for HDMI port out.
    • Reordered.
    • Tb port on second mini died in less than 24 hours.
    • Senior Apple tech said to visit Apple Store again and insist on having mini and Tb->DVI adapter tested.
    • Visited Genius Bar today and spoke to a different genius than the first visit.

     

    Result: It was the adapter.

     

    While I won't be fully convinced until this mini with new DVI adapter is solid until it's run flawlessly for two weeks, I must say this refusal by the first genius to test the adapter wasted many hours of my time and some gas money.

     

    I'm going to detail the test steps taken at the Genius Bar because it wasn't smooth and perhaps others can pick up a hint or two.

     

    Diagnostic steps:

    1. Connect mini with my Apple-branded DVI adapter to Apple's monitor. Dead.
    2. Connect mini with Apple's VGA adapter. Worked.
    3. Connect mini with Apple's DVI adapter. Dead. Maybe different pins/drivers involved so mini still defective?
    4. Connect mini with second Apple DVI adapter. Dead. Yup, seems to be a dead Tb port when using DVI.
    5. Now test my DVI adapter with their computer in case of double failure.
    6. Connect Apple laptop with my DVI adapter to Apple monitor. Dead. Both mini and DVI adapter dead?!?!
    7. Connect Apple laptop with Apple DVI adapter. Dead. ***?! My mini killed their adapter?
    8. Check DVI connector on back of monitor. Oops! Loose DVI cable. (Tighten those cables on the back of your monitors, folks)
    9. Recheck Apple laptop with Apple DVI adapter. Works. OK, loose cable at monitor confirmed.
    10. Recheck Apple laptop with my DVI adapter. Dead. So if it's dead, maybe mini is OK?
    11. Recheck mini with Apple DVI connector. Works. Great! It's not the mini.
    12. Recheck mini with my DVI connector. Dead.
    13. Looks like a DVI adapter swap is required.
    14. Check new DVI adapter with mini. Works.

     

    Conclusion: Bad DVI adapter. No idea why it resurrected for the second mini only to die again later.

     

    On the recommendation of the senior Apple tech, I will be providing polite, but strongly worded feedback to http://apple.com/retail/feedback/

     

    When I think of the hours I wasted setting up the first mini, the time & gas money for the useless first visit to the Apple Store, rolling back to my laptop, wiping and reinstalling the OS to return the mini, setting up the second mini, rolling back to my laptop again, and then syncing back to the mini today, well, you can imagine my level of dissatisfaction.

     

    So folks, if the Apple Genius tries to brush you off, insist that they do the diagnostics no matter how many times they've seen the problem.

     

    If I encounter any problems with this second adapter, I assure you I'll be back to let you know. :-)

  • BDAqua Level 10 Level 10 (114,715 points)
    Currently Being Moderated
    Dec 28, 2012 12:08 PM (in response to Tom Sheppard)

    thanks for the report!

    No idea why it resurrected for the second mini only to die again later.

    Sounds like a short within the cable when twisted just so. I mean no short when twisted just so.

  • LINDA CATE Calculating status...
    Currently Being Moderated
    Jan 2, 2013 7:42 PM (in response to ejoy_uk)

    Question for you all, has anyone else been using their mouse around and under the display? I suddenly realized why my new Samsung monitor was going black. I had my mouse on the right side of the small desk, every time I scrolled it up, I bumped the on/off spot on the bottom right if the monitor. Just thought I'd throw it out to you. Hope it isn't this with you all, I felt kinda stupid when I realized.

  • BDAqua Level 10 Level 10 (114,715 points)
    Currently Being Moderated
    Jan 3, 2013 3:31 AM (in response to LINDA CATE)

    Nice tip, thanks Linda... possibly so for some.

  • Raj_set Calculating status...
    Currently Being Moderated
    Jan 3, 2013 10:50 AM (in response to KevCheng)

    Hello Everyone,

     

    I have been thinking about the Mac Mini i5 model with Dell ultra sharp U2412 or U2312 setup from scratch.

     

    Kindly share if your display issues have been solved or if they still persist.

     

    I need to make a decision whether to take MM or not.

     

    Issues

    1. Snow

    2. Flickr/black outs

    3. HDMI colour fade

  • PackDude Level 1 Level 1 (5 points)
    Currently Being Moderated
    Jan 3, 2013 11:04 AM (in response to Raj_set)

    I haven't had any 'issues', such as the snow or black outs since the last update.  The color is still not quite right on mine, but I only notice it during certain scenes when watching a movie.

  • stringless Calculating status...
    Currently Being Moderated
    Jan 3, 2013 12:06 PM (in response to KevCheng)

    I have the video blinking/Snow problem even after the firmware update. I am on my second mini (first one was returned to Apple due to the issue).

     

    I just observed that if I connect a USB device (I use Logitech C920 Cam), the problem gets much worse. Is anybody experiencing this?

  • Tom Sheppard Level 1 Level 1 (15 points)
    Currently Being Moderated
    Jan 4, 2013 11:35 AM (in response to Tom Sheppard)

    Since getting my Thunderbolt to DVI adapter replaced on Dec. 28th I've noticed one sub-second blanking and one sub-second side-to-side shudder of the image. The monitor on the HDMI port has not exhibited any symptoms.

     

    All is still not well in mini-land.

  • Tom Sheppard Level 1 Level 1 (15 points)
    Currently Being Moderated
    Jan 4, 2013 2:42 PM (in response to Tom Sheppard)

    In the few hours since my previous post I've had another side-to-side shudder on the Thunderbolt port and two glitches on the HDMI port where horizontal lines appear and disappear in a fraction of a second. Both ports are connected via DVI adapters to monitors that have never exhibited any glitching in years of use with a variety of other computers.

     

    So this mini/DVI adapter combo lasted less than a week of use before exhibiting display problems. Sigh.

  • jacalc Calculating status...
    Currently Being Moderated
    Jan 5, 2013 6:42 AM (in response to KevCheng)

    I don't know if someone has already reported this on why their MM is blinking out. I noticed that my monitor blinks for about a second together when another electric appliance is turned on or off. I uploaded a 30second video in youtube of my screen blinking whenever i turn on/off my fan.

     

    http://youtu.be/SJV86ChhKK4 or just search "blinking computer (MM late 2012)"

     

    are there any fix that I could try because the Mac was bought in an Apple Store in Hong Kong and was brought to the Philippines and we do not have an offical Apple Store just Apple Retailers. So i don't know if whether I can return/exchange my unit with them or if they will honor the warranty.

1 ... 65 66 67 68 69 ... 80 Previous Next

Actions

More Like This

  • Retrieving data ...

Bookmarked By (37)

Legend

  • This solved my question - 10 points
  • This helped me - 5 points
This site contains user submitted content, comments and opinions and is for informational purposes only. Apple disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site. All postings and use of the content on this site are subject to the Apple Support Communities Terms of Use.