Question about Apple PowerBook G4 Mac Notebook

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Backlight dont light and firewire doesn't work...

After something like a short circuit in the firewire port, the lcd backlight suddenly turn off and never came back. Fuse problem ?

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It could be a microfuse, which is about impossible to repair. You should test the computer on an external monitor and then, when it works fine (which it probably will), you can either find a place on the internet that will fix the motherboard or you can replace the motherboard. I haven't been able to fix any of these dark screen problems in Macs, because it's usually a microfuse or the video card that goes out. I don't think it's as simple as a backlight or inverter board, which are really robust in these laptops and rarely (never in my experience) the fault.

Posted on Feb 26, 2009

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Posted on Jan 02, 2017

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[img width="68" height="29" src="http://km.support.apple.com/library/APPLE/APPLECARE_ALLGEOS/HT2699/58606_1.gif" alt="" data-hires="true">
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[img width="59" height="56" src="http://km.support.apple.com/library/APPLE/APPLECARE_ALLGEOS/HT2699/58606_2.gif" alt="" data-hires="true">
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