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Screen backlight Keys not responding

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

  1. macrumors regular

    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


    Already tried the PRAM reset?
  3. macrumors regular

    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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