Re: Non-working Commodore PET 3016
The reading Colin has on pin 8 says there is no power to the CPU power pin, it shouldn't take too much to find out why that is. As others have said (and was mentioned somewhere way back in this thread), PETs have a reputation for bad / unreliable IC sockets.
Colin is now, probably always was quite good at reading circuit diagrams and especially good at making continuity measurements, so the next thing we need him to do is to put the CPU back in the socket and (with power off) begin looking for continuity from each CPU pin to one other thing which that CPU pin should be connected to according to the diagram. Note down any which don't appear to be connected to where they should be.
It might ultimately be necessary to replace all of the sockets, but we'll cross those bridges one at a time.
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