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    PowerBook 100 in chime loop

    I have a PowerBook 100 that powers up but chimes about twice every second indefinitely until power is removed. I’ve replaced all the electrolytic caps and tested in another fully working PowerBook 100 so it’s definitely the logic board. I’ve inspected for any damaged components or corrosion but...
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    PowerBook 100 series screen vignetting

    I have a number of early PowerBooks like the 180 which have the same issue and I’m wondering if anyone knows what causes this or how to fix it. The display works fine and when first booted is fine. But then over the period of a few minutes, the corners get darker and this spreads in causing a...
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