Bought an iMac 21.5" yesterday, two stuck pixels..

Discussion in 'iMac' started by Yamcha, Mar 12, 2010.

  1. Yamcha macrumors 68000

    Mar 6, 2008
    Hi Guys,

    I bought an iMac yesterday, and today i've noticed there is one stuck pixel, what is Apple's dead pixel policy? now I bought this used but I have the original receipt and obviously theres still warranty on it..

    Anyone know?

    EDIT: I just noticed another stuck pixel :(
  2. Eidorian macrumors Penryn


    Mar 23, 2005
    There's a lot of tape to keep the pixel policy under wraps.
  3. MacHamster68 macrumors 68040


    Sep 17, 2009
    In LCD manufacture, it is common for a display to be manufactured that has a number of sub-pixel defects (each pixel is composed of three primary-colored sub-pixels). The number of faulty pixels tolerated before a screen is rejected is dependent on the class that the manufacturer has given the display (although officially described by the ISO 13406-2 standard, not all manufacturers interpret this the same way, or follow it at all).

    Some manufacturers have a zero-tolerance policy with regard to LCD screens, rejecting all units found to have any number of (sub-)pixel defects. Displays meeting this standard are deemed Class I. Other manufacturers reject displays according to the number of total defects, the number of defects in a given group (e.g. 1 dead pixel or 3 stuck sub-pixels in a 5x5 pixel area), or other criteria.

    In some cases, the manufacturer sends all screens to sale, and then replaces the screen if the customer reports the unit as faulty and the defective pixels meet their minimum requirements for return.[5] Some screens come with a leaflet stating how many dead pixels they are allowed to have before you can send them back to the manufacturer. Dead pixels may tend to occur in clusters; in most cases displays with such a problem can be sent back to the manufacturer.
    so far i did not come acoss any manufacturer with zero tolerance towards dead or stuck pixels , they all say a couple have to be accepted , one reason i would never buy a lcd/tft screen again , years ago you could return them with 1 stuck pixel but now have to live with it

    and here apples policy
  4. Yamcha thread starter macrumors 68000

    Mar 6, 2008
    Ah ic,

    Well I thought as much, oh well, I guess i'll have to live with it, on the bright side It only cost me $1000CAD no tax :].. and its in immaculate condition..
  5. jjahshik32 macrumors 603

    Sep 4, 2006
    Ask for an exchange. If the genius saids no then come back when there is a new genius and ask again (thats what I've done many times).

    If that fails then go to another Apple store near you (if you have two) thats my plan B.

    I've always gotten an exchange for a stuck pixel (even just 1).
  6. Yamcha thread starter macrumors 68000

    Mar 6, 2008
    Are you sure they would exchange it? Just so you know it was originally bought on Nov 2009.. I bought it used.. it still has its warranty.. but I don't know if they would exchange it now..
  7. Yamcha thread starter macrumors 68000

    Mar 6, 2008
    Guys theres another stuck pixel :( I don't know if it was there in the beginning but I noticed it today..

    I want a replacement!!
  8. rgarjr macrumors 603


    Apr 2, 2009
    Southern California
    Try using the app that attempts to fix those stuck pixels.
  9. 7031 macrumors 6502


    Apr 6, 2007
    Haha, I was about to suggest this.

    Yes, go and search on Google for "Stuck pixel fixer".

    Also, in regards to returning it, while you probably won't have any luck, it's definitely worth asking Apple about it. I wouldn't worry too much about it, stuck pixels come and go, and while I have one stuck pixel on my iMac's display, it only really bothered me the first moment I had it. I don't even think about it or notice it anymore, but in fairness mine is the 27" model. Sadly it seems the quality control is dropping with Apple ever since about 2007 haha, but at the same time, I'd say that Final Cut and Logic etc make it worth it (for me at least).
  10. MacGurl111 macrumors 65816


    Feb 4, 2010
    Thanks. I'm going to have to check that out myself.
  11. WilliamG macrumors G3

    Mar 29, 2008
    And after it doesn't work, just go exchange the thing if it bothers you.
  12. Phantom Gremlin macrumors regular

    Feb 10, 2010
    Tualatin, Oregon
    I don't know

    I've owned this 24" iMac for about 2 1/2 years now, and I don't know if I have any bad pixels.

    I don't know because I haven't looked for them!

    Admittedly my eyeballs are normally about 30" from the screen. At your normal viewing distance, are the bad pixels noticeable in "real world" applications, rather than in test patterns?

    Of course, there's a world of difference between a stuck dark sub-pixel (probably irrelevant) and a stuck bright sub-pixel (potentially annoying). I thought that Apple is using IPS displays now, and they tend to fail stuck dark. Anyone have more info to add?

Share This Page