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Old 7th Jan 2021, 6:09 pm   #64
ScottishColin
Octode
 
Join Date: May 2012
Location: Perth, Scotland
Posts: 1,762
Default Re: Non-working Commodore PET 3016

OK - here's a thing. I've spotted from the schematics that CLK1 also goes to UH3 pin1. Continuity testing is giving me an intermittent connection here. If I press a bit on the connections on the board (I'm sure they have a proper name) I can get a signal, but without pressing, I can't.

I'm assuming this isn't helping overall, but might it affect the frequency problem?
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