Dead Pixel Test?

Discussion in 'iMac' started by Zwhaler, Oct 18, 2006.

  1. Zwhaler macrumors 603

    Zwhaler

    Joined:
    Jun 10, 2006
    #1
    Does anyone know if how to test the screen for dead or stuck pixels? Because I don't really know how to tell, and I want to know if I have any because I can still return my machine unconditionally. Thanks.
     
  2. Flyinace2000 macrumors 6502a

    Flyinace2000

    Joined:
    Sep 28, 2004
    #2
    Take the screen, unplug it. Shake it up and down like an etchasketch. If any of the screen remains colorful then you have some stuck pixels.
     
  3. Lau Guest

    #3
    I think if you had any you would notice, but try making a blank white image, and a plain red, a plain green and a plain blue image, and show them full screen. Any dead pixels will show up black, and any stuck ones will show up either red, green or blue, depending on which colour they're stuck on.
     
  4. Flyinace2000 macrumors 6502a

    Flyinace2000

    Joined:
    Sep 28, 2004
    #4

    A large black image works best. It makes the bright red, blue or green pixzxels pop out if they are stuck on.
     
  5. Lau Guest

    #5
    Only if they're totally jammed on — I had one on my old laptop that would only show blue, but was off completely on a black screen. It would show up as black on a red screen, but would be almost invisible on a white screen. A black scren also wouldn't show up dead pixels. Best to try a white, a black, a pure red, a pure green and a pure blue screen. If you see nothing in them, you're ok.
     
  6. TheAnswer macrumors 68030

    TheAnswer

    Joined:
    Jan 25, 2002
    Location:
    Orange County, CA
    #6
    Probably best to do all five: all white, all black, then red, green and blue. I can see missing some of the colored ones in a different colored background, so the black can come in handy.

    Edit: Yeah...what Lau said. Geez I need to type faster.
     
  7. Konradx macrumors 6502

    Konradx

    Joined:
    Oct 19, 2005
    Location:
    Toronto, Canada
  8. Mechcozmo macrumors 603

    Mechcozmo

    Joined:
    Jul 17, 2004
    #8
    Linkety

    App that does what you need it to do. Has colors+black/white.
     
  9. beatsme macrumors 65816

    beatsme

    Joined:
    Oct 6, 2005
    #9
    most LCD monitors have a dead pixel or two. A 1024x768 resolution monitor has 786,432 pixels to deal with, so a bad one here or there isn't uncommon. If it's in a place on the screen that you can live with, don't sweat it.
     
  10. flir67 macrumors 6502

    Joined:
    Jun 23, 2005
    #10
    I had one on my 27" hdtv that was hooked up to my mac min.

    the saying goes, burn it in, use a screen saver on, and just leave it on constantly for 48hours.

    lcd's have to be worked in over a period of time to achieve optimaliness of color,etc.

    I did it to mine and with in a week the stuck pixel was fixed.
     
  11. mkrishnan Moderator emeritus

    mkrishnan

    Joined:
    Jan 9, 2004
    Location:
    Grand Rapids, MI, USA
    #11
    You might try Pixel Fix -- it's a widget that puts up a rapidly cycling red/green/blue block. The idea is that sometimes stuck pixels get unstuck with sufficient rapid cycling (no luck on the one in my iMac as of yet). But you can also use it to find pixels pretty easily, as they should be quite obvious if the widget is over the pixel.
     
  12. JAT macrumors 603

    Joined:
    Dec 31, 2001
    Location:
    Mpls, MN
    #12
    Very true. In 19xx. Don't settle in 2006. There should be zero.
     
  13. fall3n macrumors 6502

    Joined:
    Aug 17, 2006
    #13
    consider yourself lucky, i have 5 stuck pixels. though none dead
     
  14. mkrishnan Moderator emeritus

    mkrishnan

    Joined:
    Jan 9, 2004
    Location:
    Grand Rapids, MI, USA
    #14
    My stuck one actually appears to have resolved itself. At least, I can't seem to find it this morning. :eek:
     
  15. mjstew33 macrumors 601

    mjstew33

    Joined:
    May 29, 2005
    Location:
    Illinois
    #15
    Call Apple and get that replaced!

    Unexceptable!
     
  16. I'mAMac macrumors 6502a

    I'mAMac

    Joined:
    Aug 28, 2006
    Location:
    In a Mac box
    #16
    But is is pretty small. Do you have to move it around the whole screen? I don't think I have any dead pixels but I can't tell really.
     
  17. mkrishnan Moderator emeritus

    mkrishnan

    Joined:
    Jan 9, 2004
    Location:
    Grand Rapids, MI, USA
    #17
    There's a version floating around that's full screen also... but in either event if it's there, when you use something like this it is very easy to tell.
     

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