Strange white "dead Pixel? Retina MBP

Discussion in 'MacBook Pro' started by NStocks, Jan 24, 2013.

  1. NStocks, Jan 24, 2013
    Last edited: Jan 24, 2013

    NStocks macrumors 65816

    Joined:
    Apr 3, 2008
    Location:
    England
    #1
    Hello,

    I've recently been working on some detailed graphic design on my Retina MBP 15" using a white background and I noticed that there was some weird dot in the bottom left of my screen. After wiping the screen to ensure it wasn't dust, it appears there is something strange going on in the LED.

    I've attached a image, but it't not very clear. It's a few pixels of white but it is only visible on a medium grey or lighter backdrop. Normally "dead pixels" are visible on any colour, however this is not visible on black backgrounds.

    What do you think? It's about 5 months old.

    Thank you
     

    Attached Files:

  2. walkie macrumors 6502

    Joined:
    Feb 13, 2010
    #2
    As far as I can see this seems to be a spot discoloration, I've seen it happening on old LCD screens, you can take it to the Genious Bar and see what they say.
     
  3. NStocks thread starter macrumors 65816

    Joined:
    Apr 3, 2008
    Location:
    England
    #3
    That seems to be a better description of the issue here. I've also found that there is a fair amount of bleeding on dark screens :(

    Why can't Apple have good screen quality!

    Does anybody know if they are still using LG panels? I'm on replacement /No.2 which is LG but it's brighter than the previous 2... I don't want to seek a replacement and end up with a dull yellow screen.
     
  4. iLukeJoseph macrumors 6502

    Joined:
    Dec 20, 2011
    #4
    Uh, your doing "detailed" graphic design and not calibrating your display (with hardware)?

    Reason I ask is that you are worried about getting a "dull yellow screen". Well unless you get a screen that has malfunctioned, you can "fix it" by a proper calibration. And what you are referring to as brightness (contrast/white level/light ouput), is not a measurement of performance. Black level is though.

    I will never understand why anyone would buy a Retina display MBP and not calibrate it. One spends 2k+ on a premium laptop with a very high res display, but not willing to spend $2-300 on calibration hardware (which you can also use on your TV/Projector/Desktop Monitor etc).
     
  5. NStocks thread starter macrumors 65816

    Joined:
    Apr 3, 2008
    Location:
    England
    #5
    Calibration has absolutely nothing to do with a defective screen with bleeding and strange discoloured pixels. Calibration will not and does not make a screen any brighter than what it comes out of the factory with. You can't make it any brighter by calibration, only change the temperature and saturation. Whilst it's true that bluer screens tend to appear brighter than a yellowish tint (defect apparently), the actual brightness does not alter.

    I have a colormunki and know perfectly well how these things work. My question was regarding developed defects of a decent screen compared to the yellow tinted units I sent back. For what it's worth, the "pixel fixer" that supposedly removes "dead pixels" made no difference. Like what was stated above, this appears to be a discolouration.

    Now the question is do I send it back and hope for a normal screen, or keep it and just try to forget. The former seems the right way since I did pay so much for it... (My post was to simply ask for advice on what the issue was before I contacted Apple)
     
  6. T5BRICK macrumors 604

    T5BRICK

    Joined:
    Aug 3, 2006
    Location:
    Oregon
    #6
    On older Powerbooks, iBooks and MacBooks, bright spots like that were often caused by pressure on that spot of the screen or screen housing.
     
  7. NStocks thread starter macrumors 65816

    Joined:
    Apr 3, 2008
    Location:
    England
    #7
    That's right, I remember on old LCD's when you just slightly touched it, the screen would go weird. I don't really move my Mac about that much and I'm always extra cautious when cleaning it... Internally there seems very little room for movement to cause pressure.

    I'll give Apple a call and mention the light bleeding too. I don't plan on upgrading for a few years and I don't want a faulty unit until that time.
     

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