Help! iMac G4 screen very dim.

Discussion in 'PowerPC Macs' started by jaxstate, Jul 25, 2006.

  1. macrumors 6502a

    Apr 13, 2006
    Well, I'm not sure if my LCD is gone or that some type of other LED has went out on the LCD. When I look at the screen, I can see the desktop,menu bar, and dock just fine, proplem is, it's very dim, I mean very very dim. I was able to naviagate my way to the display options, and brightness was all the way up. I tried moving the brightness up and down, but couldnt see a difference. I'm wondering if there is a seperate LED that the brightness control uses. Any info wil help, and I'll start doing google searches too.
  2. Moderator


    Staff Member

    Sep 2, 2004
    The Centennial State
    Sounds to me like your backlight is shot. The LCD part only determines the color. It is up to the backlight to supply the brightness.
  3. macrumors G4


    Jul 4, 2005
    I think your screen may be on it's way out. If not the screen then the light (it's not an LED - LED-lit LCD screens are only just coming out and they cost a fortune) may be on its last legs.
  4. macrumors 6502


    Aug 7, 2003
    As others have posted, it is likely you need a new backlight. Did u notice any flickering with the monitor before it rendered its soul? That is what mine did...flickered then died...about one month before applecare runned out....

    And, no! I wasn't lucky...They lost the monitor and it took 7 weeks to get a replacement :mad:
  5. thread starter macrumors 6502a

    Apr 13, 2006
    I did some google searches, and it seems that the inverter board going bad has cause this for others. I'll go to my apple reseller to see if thy keep parts handy. I'm way past Applecare so i'll be doing this myself.
  6. macrumors G4


    May 26, 2005
    Working for MI-6
    Same here, that sounds like the backlight for the LCD is dying/dead. :eek:
  7. macrumors regular

    Jul 20, 2006
    had similar issue on an old PC LCD from viewsonic, the lcd eventually got dimmer and dimmer and finally went out, lucky it had standard 3 year warranty and viewsonic swapped it out

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