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

SiriusHardware · 17th Mar 2021, 6:44 pm

I've just been doing a bit of looking about. The pinout for the 4108 seemed remarkably hard to find but I got it eventually, so attached, the pinouts for the 4108 and 4116 respectively. From a connection point of view they seem identical so presumably the 4108 has nothing in the 'unused' half. I think Mark suggested as much earlier.

Am I right in thinking, in that case, that if we keep the machine linked for 16 * 4108 as it is now, we can replace individual suspect 4108s with 4116s without changing anything else, at least until the machine is up and running?

17th Mar 2021, 6:44 pm	#1096
SiriusHardware Dekatron Join Date: Aug 2011 Location: Newcastle, Tyne and Wear, UK. Posts: 11,570	Re: Non-working Commodore PET 3016 I've just been doing a bit of looking about. The pinout for the 4108 seemed remarkably hard to find but I got it eventually, so attached, the pinouts for the 4108 and 4116 respectively. From a connection point of view they seem identical so presumably the 4108 has nothing in the 'unused' half. I think Mark suggested as much earlier. Am I right in thinking, in that case, that if we keep the machine linked for 16 * 4108 as it is now, we can replace individual suspect 4108s with 4116s without changing anything else, at least until the machine is up and running? Attached Thumbnails