Screen backlight Keys not responding

Discussion in 'PowerPC Macs' started by Hallivand, Mar 22, 2012.

  1. macrumors regular

    Joined:
    Aug 26, 2010
    Location:
    Sydney, Australia
    #1
    Hey all, I recently acquired a 17" Powerbook G4 1.33Ghz for very cheap. However, the only issue I can see is that while the screen backlight slider moves up and down, the screen itself doesn't dim or become any brighter. Could this be a hardware issue that is fixable or software, as it is running OS X Leopard 10.5.8

    Thanks in advance,
     
  2. macrumors 68000

    Hrududu

    Joined:
    Jul 25, 2008
    Location:
    Wichita KS
    #2
    Already tried the PRAM reset?
     
  3. thread starter macrumors regular

    Joined:
    Aug 26, 2010
    Location:
    Sydney, Australia
    #3
    I've tried resetting the PRAM, NVRAM and PMU to no avail :( as well as formatting the OS to clear out any cruft from the previous installation.
     

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