HELP! Kids' iMac display issue!

Discussion in 'Macintosh Computers' started by sigamy, Jan 20, 2005.

  1. macrumors 65816

    Joined:
    Mar 7, 2003
    Location:
    NJ USA
    #1
    We have an iMac DV that just started acting up. During boot the monitor is fine--displays colors and good resolution. But once the OS is loaded the screen is sort of black & white. I've check the contrast and brightness, changed resolutions and color depth, nothing has worked. It is almost like a reverse negative image. No colors, just black and white. Is this a hardware issue or software setting? Again, the monitor is fine when OS X is loading.

    This iMac has been working fine for years. It was working fine when my kids were playing a game, then the next day the display went crazy. Could my kids have pressed a few buttons or something?

    This is a G3 CRT iMac DV running Panther.
     
  2. Moderator emeritus

    robbieduncan

    Joined:
    Jul 24, 2002
    Location:
    London
    #2
    Could be high contrast mode. Open System Preferences and check in the Accessability pane.
     
  3. jsw
    Moderator emeritus

    jsw

    Joined:
    Mar 16, 2004
    Location:
    Andover, MA
    #3
    Try pressing control-option-⌘-8 (while holding down the first three, press '8'). That'll toggle between the two visibility modes.
     
  4. macrumors 6502

    Joined:
    Sep 17, 2004
    #4
    You can also access the negative image setting under Universal Access in the System Preferences (Set Picture to White on Black). It's actually a very common thing to hit on desktop keyboards, because the 8 key on a number pad is close to the eject key. The Ctrl-Alt-Cmd-Eject sequence is used to turn the machine off. One little finger slip can cause the display colours to go screwy.
     
  5. jsw
    Moderator emeritus

    jsw

    Joined:
    Mar 16, 2004
    Location:
    Andover, MA
    #5
    The key combo only works for me with the '8' above the letter keys, not on the keypad.
     

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