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Old 22nd Jan 2021, 5:24 pm   #216
ajgriff
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Join Date: May 2004
Location: Halifax, West Yorkshire, UK.
Posts: 2,583
Default Re: Non-working Commodore PET 3016

I know little about PETs but now a 'scope is available is it worth verifying that the three video signals are present (or not) on the monitor's board? If Colin is uncomfortable (understandably) about live measurements near the CRT (10kV!) this could be done at the socket end of the connections to the motherboard followed by wiring continuity checks with the PET switched off. Just a thought.

Personally I'd also clean all the plugs and sockets connecting the monitor especially knowing that the machine has lain dormant for a lengthy period. After all the main fault symptom is 'no display'.

Forgive me if I've missed something but this has developed into a rather long thread.

Alan
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