Just received 2011 27" iMac - dead pixels...

Discussion in 'iMac' started by imaginex20, May 16, 2011.

  1. imaginex20 macrumors 65816

    imaginex20

    Joined:
    Jun 17, 2009
    #1
    Was totally anticipating my iMac for the past week and today I finally received it. Powered it on and right away noticed two areas with dead pixels, one looks like 2-3mm of dust; not sure if its dead pixels. The other area looks like 2-3 dead pixels in a row very apparent also.

    I purchased it from Macconnection and already emailed them. This sucks...Now I can't really set it up to how I want it knowing that I would probably have to exchange for a new one.
     
  2. mrfoof82 macrumors 6502a

    Joined:
    May 26, 2010
    Location:
    Lawton, OK
    #3
    On a 22-30" display one of the following conditions must be met to merit replacement for dead pixels.
    • 9 or more pixels stuck on (bright)
    • 11 or more pixels stuck off (dark)
    • 16 or more pixels are stuck on or off (combination)
     
  3. imaginex20 thread starter macrumors 65816

    imaginex20

    Joined:
    Jun 17, 2009
    #4
    So you guys are saying this is acceptable? =(
     
  4. GGJstudios macrumors Westmere

    GGJstudios

    Joined:
    May 16, 2008
    #5
    We're not. Apple is.
     
  5. mrfoof82 macrumors 6502a

    Joined:
    May 26, 2010
    Location:
    Lawton, OK
    #6
    Ding.

    Also, consider that each pixel has 3 sub-pixels, any of which could fail in either state. 2560x1440x3 = 11,059,200. The "best case" failure for a replacement is 1 pixel out of every 1,128,800 failing, whereas the worst case is 1 pixel out of every 691,200 failing.

    Pixel issues on LCDs are reasonably common. In the case of the LG displays used for the 27" iMac, there are over 11 million chances per display for something to have gone wrong in manufacturing. The fact that a lot of pristine displays ship is a testament to how rigorous manufacturing processes have become*.


    *Until, of course, you compare to semiconductors, but the pricetag of fabrication facilities absolutely dwarves that of panel plants.
     
  6. tsugaru macrumors 6502

    Joined:
    Feb 9, 2003
    Location:
    Edmonton
    #7
    Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU iPhone OS 4_3_3 like Mac OS X; en-us) AppleWebKit/533.17.9 (KHTML, like Gecko) Version/5.0.2 Mobile/8J2 Safari/6533.18.5)

    Exchange it.m, since it's brand new. Apple will swap the panels and sell it as a refurb. The defective one will go to LG to get swapped for a good one.

    If you're not 100% happy, don't keep it. It's not going to cost you anything to exchange/return it.
     
  7. mrfoof82 macrumors 6502a

    Joined:
    May 26, 2010
    Location:
    Lawton, OK
    #8
    Apple accepting an exchange for dead pixels fewer than the numbers in their policy will always be an exception. It's worth a shot, but it's not to be expected.

    Additionally, if this was a custom order (CTO), returns (mostly refunds) being allowed would also be an exception.

    Since it was ordered through a reseller, it's worth trying all the available channels to see if you can get anywhere. MC might be willing to do an exchange since removing foreign material from underneath the glass already requires authorized service.
     
  8. imaginex20 thread starter macrumors 65816

    imaginex20

    Joined:
    Jun 17, 2009
    #9
    Yeah, I emailed MC about it already. I am more concerned with the dust/particle under the screen. It stands out like a freaken sore thumb. Attached is a pic of what I mean..
     

    Attached Files:

  9. roland.g macrumors 603

    roland.g

    Joined:
    Apr 11, 2005
    Location:
    One mile up and soaring
    #10
    My 2007 24" iMac arrived with 3 dead/stuck pixels. They were not adjacent, but near each other and near the center of the screen a little below half way up. In other words, right in my field of view. I spoke to Apple (and this was before all the 9,11,or16 stuff was coming out because of so many pixel related replacements, so it was quite easy to get a replacement sent out. My replacement had 1 stuck pixel, that is permanently red, just under half way up, and less then half an inch in from the right side of the screen. It is difficult for me to find it unless I put a solid white or light color desktop picture up and most of the time my desktop rotates through a folder of about 20 images. It wasn't worth making a stink over, however, when I get my 27" this summer, I will probably buy a stock model from a B&M Apple Store. If there are pixel problems I will most likely return it immediately and try my luck on another one.
     
  10. NutsNGum macrumors 68030

    NutsNGum

    Joined:
    Jul 30, 2010
    Location:
    Glasgow, Scotland
    #11
    Best thing to do with this is get a balloon -- blow it up and rub it off your clothes. Then, take it to where the dust particle is and slowly rub the balloon downward, this causes the particle to follow the balloon because of the static charge -- you should be able to get it so that it's completely under the visible area of the screen. It worked wonders for me when I had the same problem!
     
  11. imaginex20 thread starter macrumors 65816

    imaginex20

    Joined:
    Jun 17, 2009
    #12
    Thanks for the advice. I'm going to give this a try because I can see the dust particle when the screen is off.
     
  12. 50548 Guest

    Joined:
    Apr 17, 2005
    Location:
    Currently in Switzerland
    #13
    Now that's something! :D
     
  13. The-Pro macrumors 65816

    Joined:
    Dec 2, 2010
    Location:
    Germany
    #14
    Haha, how is awesome is that, respect dude. did u come up with that yourself?? your a genius man
     
  14. Jazwire macrumors 6502a

    Jazwire

    Joined:
    Jun 20, 2009
    Location:
    127.0.0.1
    #15
    That actually might be the most useful , unique info I've ever got from this forum.
     
  15. madkinley macrumors newbie

    Joined:
    Mar 22, 2011
    #16
    i just waiting for my imac 27 to be delivered and just stole a balloon form my 6 year old justin case:D
    GREAT IDEA:)
     
  16. 50548 Guest

    Joined:
    Apr 17, 2005
    Location:
    Currently in Switzerland
    #17
    Although this should work with any other material that keeps static charges, such as wool...
     
  17. imaginex20 thread starter macrumors 65816

    imaginex20

    Joined:
    Jun 17, 2009
    #18
    just tried the balloon thing and it didn't work. I guess I gotta bring it to Apple to have them take a look..:(
     
  18. spacepower7 macrumors 68000

    Joined:
    May 6, 2004
    #19
    Some online retailers will not accept returns or exchanges. These conditions along with dead pixels and some yellow/tinted screens are the reason I am buying through an Apple retail store. You can return, no problems within two weeks. It's worth the extra money to have that option.

    Also, sometimes pixels get stuck on new LCDs, but many times they work fine after some use. In the past, I used a QuickTime movie that flashed many different colors on the screen in a particular order and this solved the problem, bringing life back to stuck or dead pixels.

    If I recall the mov file was called:
    pixelmurder.mov
    Google it and run the movie full screen for an hour, see if that helps.
     
  19. IeU macrumors member

    Joined:
    May 1, 2011
    #20
    Searched and seems all links are down, can you up it please ?
     
  20. spacepower7, May 18, 2011
    Last edited: May 18, 2011

    spacepower7 macrumors 68000

    Joined:
    May 6, 2004
    #21
    I don't know if it can be uploaded to the MacRumors forum so I put it on my Dropbox.

    I don't take credit for the creation of this video, but recommend it since it has worked for me in the past.

    The creator of this version is nicktoolhill, I'm not sure who is the original creator.


    It is not guaranteed to work but it may help and is worth trying.

    Disclaimer: If you are Epileptic or are bothered by fast flashing video or TV, do not watch the video while playing.

    Play in Quicktime, use the "Loop" option in the "View" menu. You might want to play in full screen mode to "exercise your LCD" ;)

    Here's the link:
    http://dl.dropbox.com/u/1049425/pixelmurder.zip
     
  21. imaginex20 thread starter macrumors 65816

    imaginex20

    Joined:
    Jun 17, 2009
    #22
    I talked to MacConnection today and they agreed to send me a new one and ship back the old one. Issue resolved!
     
  22. Calbretto macrumors member

    Calbretto

    Joined:
    Mar 1, 2011
    Location:
    Toronto
    #23
    I will be ordering my iMac in the next week or two and I am pretty nervous about having dead pixels or yellowing on my screen. I better keep my fingers crossed.
     
  23. imaginex20 thread starter macrumors 65816

    imaginex20

    Joined:
    Jun 17, 2009
    #24
    just got my new replacement iMac shipped to me today and this one is much better, no dead pixels that I can see and no dust particles under the screen! :D
     
  24. iRobby macrumors 6502a

    iRobby

    Joined:
    Mar 22, 2011
    Location:
    Fort Myers, FL USA
    #25
    CONGRATULATIONS!! but IMHO next time buy through Apple online or an Apple Store. I for one when making a major purchase I prefer to deal with he manufacturer directly if possible. And thanks to Stevo I can!
     

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