UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Non-working Commodore PET 3016

SiriusHardware · 12th Apr 2021, 4:02 pm

Yes, I see your reasoning.

It's a shame Colin doesn't have a friendly football team dropping by to visit, as they could then hold down all of the keys (to give us the required pullups) while he scopes the outputs of the 74LS145 so we could see what is happening. To be honest I don't think it's of vital importance as I feel really sure now that the 74LS145 is the culprit.

12th Apr 2021, 4:02 pm	#1577
SiriusHardware Dekatron Join Date: Aug 2011 Location: Newcastle, Tyne and Wear, UK. Posts: 11,570	Re: Non-working Commodore PET 3016 Yes, I see your reasoning. It's a shame Colin doesn't have a friendly football team dropping by to visit, as they could then hold down all of the keys (to give us the required pullups) while he scopes the outputs of the 74LS145 so we could see what is happening. To be honest I don't think it's of vital importance as I feel really sure now that the 74LS145 is the culprit. Last edited by SiriusHardware; 12th Apr 2021 at 4:13 pm.