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ScottishColin · 25th Jun 2022, 7:59 pm

So the implication is that it's a 6502 fault. It could be the 6502, the socket or any of the connections to/from.

You could either plug in your PET 6502 and see what happens, which risks breaking that one too, or you could wait for better advice than mine on looking at the schematics to work it through.

Colin.

25th Jun 2022, 7:59 pm	#24
ScottishColin Octode Join Date: May 2012 Location: Perth, Scotland Posts: 1,821	Re: Dead commodore 4040 disc drive So the implication is that it's a 6502 fault. It could be the 6502, the socket or any of the connections to/from. You could either plug in your PET 6502 and see what happens, which risks breaking that one too, or you could wait for better advice than mine on looking at the schematics to work it through. Colin.