UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - MK14 programming interface

Timbucus · 8th Apr 2019, 8:10 am

Yes that is correct they now represent a clean sweep after the four column selects in numeric order for the BCD decode lines - that was my problem I had no connection physically on the 6 in the salvaged edge connector I built it with or I could have modified the patching - this way I now have an edge connector for an original as well.

This is a 4.43 crystal but. I was using a PI0 not a W so I think that may have an effect. I do seem to have an issue though as the reset does not seem to take all the time - removing the programmer the fault shows anyway just not as often maybe the cap/resistor combination is not holding it low long enough - will put a scope on it when I can make room on the bench for a full size one.

8th Apr 2019, 8:10 am	#26
Timbucus Octode Join Date: Mar 2019 Location: Barry, Vale of Glamorgan, Wales, UK. Posts: 1,363	Re: MK14 programming interface - MK2 Yes that is correct they now represent a clean sweep after the four column selects in numeric order for the BCD decode lines - that was my problem I had no connection physically on the 6 in the salvaged edge connector I built it with or I could have modified the patching - this way I now have an edge connector for an original as well. This is a 4.43 crystal but. I was using a PI0 not a W so I think that may have an effect. I do seem to have an issue though as the reset does not seem to take all the time - removing the programmer the fault shows anyway just not as often maybe the cap/resistor combination is not holding it low long enough - will put a scope on it when I can make room on the bench for a full size one.