This is an old post, preserved for reference.
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This is the start of either a very long article, or more likely, a series of articles, covering the restoration of a Commodore Pet. Last year, I dug out the case from a Commodore Pet 4032, with the intention of finding something interesting to put in it, since I didn't have the original main board or power supply. I did look at various options, and managed to drive the keyboard and screen from a microcontroller, and for a while, it ran with a Z80 CP/M system inside.
the power supply.