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

SiriusHardware · 4th Jan 2021, 8:34 pm

I'm honestly surprised you managed to get a potentiometer leg to go into an IC socket but clearly you did, so... continue on around the rest of the socketed ICs if you have not already, you may find one or two more like that, or you may find one which has been removed in the past and put back in with a pin folded over. (That is very easy to do, still happens to me sometimes even now).

In the meantime we'll muse over what to look at next. I think probably the simplest go / no go indication for the mainboard is to see whether it is producing sync pulses for the monitor and work forwards or backwards from there. I'll look into where to look for that: Back shortly.

4th Jan 2021, 8:34 pm	#33
SiriusHardware Dekatron Join Date: Aug 2011 Location: Newcastle, Tyne and Wear, UK. Posts: 11,548	Re: Non-working Commodore PET 3016 I'm honestly surprised you managed to get a potentiometer leg to go into an IC socket but clearly you did, so... continue on around the rest of the socketed ICs if you have not already, you may find one or two more like that, or you may find one which has been removed in the past and put back in with a pin folded over. (That is very easy to do, still happens to me sometimes even now). In the meantime we'll muse over what to look at next. I think probably the simplest go / no go indication for the mainboard is to see whether it is producing sync pulses for the monitor and work forwards or backwards from there. I'll look into where to look for that: Back shortly.