My iMac's monitor just suddenly turned bright green!

Discussion in 'iMac' started by Gunhaver, May 21, 2007.

  1. Gunhaver macrumors member

    Nov 12, 2006
    Is something like this decumented? I can still see everything on the screen, it's just extremely tinted green, and it's like that since the moment it boots up, even the first grey startup screen is green. I've tried calibrating and it doesn't help at all.
  2. Peace macrumors Core


    Apr 1, 2005
    Space--The ONLY Frontier
    It would help in these type of posts if the exact type of Mac is described.
  3. Gunhaver thread starter macrumors member

    Nov 12, 2006
    It's an iMac 1.9ghz PowerPC G5 with the latest OSX.
  4. carfac macrumors 65816


    Feb 18, 2006
  5. Cormier6083 macrumors regular


    Sep 6, 2006
    After reading around, I would have to concur.
  6. tombarnes macrumors 6502


    Feb 26, 2006
    Surrey, United Kingdom
    The same happened to me ages ago (and I took a screenshot), but its never happened again. I restarted and it was all fine. If you look closely, the whole screen isnt green, some of the menubar is normal.

    I seem to remember that when it happened, the green kinda 'swiped' from top to bottom.


  7. yippy macrumors 68020


    Mar 14, 2004
    Chicago, IL
    It used to be that when your screen turned green or purple like that it meant that the cable connecting your monitor was faulty. As the screen is internal this is unlikely although still possible, however the backlight failing is the more likely cause.
  8. Gunhaver thread starter macrumors member

    Nov 12, 2006
    Ok........ so what does that mean and what should i do?
  9. iBookG4user macrumors 604


    Jun 27, 2006
    Seattle, WA
    Have you tried restarting? Also it is very unlikely, but have you tried going to display system preference pane and then going to color? I've never had my MacBook Pro's screen go that green before, but I have had it get set to a different display profile.
  10. Gunhaver thread starter macrumors member

    Nov 12, 2006
    I've restarted, powered down, unplugged, reset PRAM, and tried recalibrating, nothing helps.
  11. KingofAwesome macrumors regular

    Feb 7, 2007
  12. stuff99 macrumors 6502

    May 11, 2007
    i think one of the biggest flaws on imacs is that everything is in one piece so when the monitor fails theres nothing you can do about it
  13. NickD macrumors 6502a


    Mar 25, 2007
    My advice is not to mess with the insides of your iMac. Take it to the nearest Apple Store or repair shop and have them look at. If you have AppleCare or are still under some sort of warranty, they'll cover it for free.
  14. Gunhaver thread starter macrumors member

    Nov 12, 2006
    Geez! this morning I turned the computer on, and quite happily I saw the screen had returned perfectly to normal, and then later in the day it suddenly turned back to green again!
  15. Cormier6083 macrumors regular


    Sep 6, 2006
    Yup... backlight. Your local Apple store ( hopefully it isn't 2 hours away... by plane)should be able to assist you
  16. adav macrumors member

    Dec 26, 2006
    i dont understand how this can be a backlight problem when part of the menubar and bottom strip is ok with such clear edges (see original pic). surely a backlight problem would have more of a haze :confused: ?

    edit: just noticed tombarnes just had a different green problem to the one in question. i'll go hide in the corner now...
  17. Cybergypsy macrumors 68040


    May 16, 2006
    Central Florida!
  18. stuff99 macrumors 6502

    May 11, 2007
    do you guys all recommend getting applecare on your products?
  19. thejadedmonkey macrumors 604


    May 28, 2005
    Totally off topic, but no. Laptops, yes. Definitely.
    Desktops, nahhh... they hardly ever fail on you, why pay the extra for something that you'll most likely never need.

    And I say it's the cable connecting the monitor to the graphics card. How would a faulty backlight change the hue of the monitor?
  20. NATO macrumors 68000


    Feb 14, 2005
    Northern Ireland
    This can't be a backlight issue as the backlight is simply a lamp which shines light through the LCD panel in order for you to see the LCD clearly enough, it doesn't change colour to green suddenly!

    The more likely explanation is either there is a connection issue between the graphics card and the display, or a fault with the graphics card itself.

    The fact that in the screenshot above where most of the screen is green except for a small portion at the bottom, I would have to say that it's likely a graphics card problem as the OS X screen-capture utility wouldn't capture the screen as green unless the graphics card was generating it before it left for the display.

    Either way, you'll need to speak to Applecare to get it fixed.
  21. myjellyass macrumors regular

    May 1, 2007
    Edinburgh, Scotland, UK
    Correct me if I'm wrong, but I have to agree with NATO. If you can take a screenshot of it then it is likely not a fault with the screen or any connection to it. This means that it has been generated by the computer before being sent to the screen. This is similar with inverting your screen; it is not possible to take a picture when the colours of your screen have been inverted because the card is changing the colours rather than the computer itself.

    Could be a virus (yes, they do sometimes happen), or more likely a hardware problem in the machine.
    Get it sorted at an Apple retailer, don't even think about opening up that beautiful box because once you do, you probably won't be able to fix it and any waranty will be void.

    Good luck.
  22. RedTomato macrumors 68040


    Mar 4, 2005
    .. London ..
    Yes, I was thinking the same thing. How could a screen capture show the green if it was a fault with the monitor?

    Screen captures only show the data being sent out by the computer.

    If the computer is fine but the monitor is faulty, then only a photo taken with your camera or mobile phone would show it.
  23. bdemers macrumors newbie

    Jan 7, 2007
    You guys should read more carefully.

    The screen capture was taken by a different user for a different issue.

    I agree, if it's cabling problem, it's not going to show up on the screen capture.
  24. topgunn macrumors 65816


    Nov 5, 2004
    Try booting onto the restore disks to see if we can rule out a software problem.
  25. FocusAndEarnIt macrumors 601


    May 29, 2005
    Do you have any warranty left? I sure hope you do. This is a hardware problem -- don't waste your time trying to fix it; call Apple and have it sent in.

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