Re: Non-working Commodore PET 3016
The keys that do not work are all on one trace.
Here's a ZIP of my PCB.
I have continuity from the plug on the end of the wiring bundle to pin 1.
I have continuity from the solder joint of pin 1 to a carefully scraped area of the trace which I have circled in Red.
I have continuity from the other carefully scraped area of the trace which I have circled in Green to the relevant keypads.
I do not have continuity between the the Green circled trace and the Red circled trace.
Is it time for another carefully positioned wire between the two scraped off circled traces?
Colin.
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