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

SiriusHardware · 18th Mar 2021, 11:11 pm

I did idly wonder if the other gate in UB2 is used for anything because if not we could perhaps have tried to patch the unused-hopefully-OK gate in, Tim style, to see if that made a difference.

Unfortunately the other gate is used, as part of the address decoder on sheet 1. If we conclude that we have to replace UB2, doing so might even fix a few other problems which we don't even know we have yet.

18th Mar 2021, 11:11 pm	#1170
SiriusHardware Dekatron Join Date: Aug 2011 Location: Newcastle, Tyne and Wear, UK. Posts: 11,553	Re: Non-working Commodore PET 3016 I did idly wonder if the other gate in UB2 is used for anything because if not we could perhaps have tried to patch the unused-hopefully-OK gate in, Tim style, to see if that made a difference. Unfortunately the other gate is used, as part of the address decoder on sheet 1. If we conclude that we have to replace UB2, doing so might even fix a few other problems which we don't even know we have yet.