TA-DAAAA
It is working perfectly again!
I did discover that when trying the display on/off system by placing the "switch" in the ground leg of the two output ICs, that I had brought out
a new ground lead and I failed to restore the regular ground connection....so proper ground again and it works. , and the P channel FET works fine as well. Just finishing some tidying up of wires, installing power jack on box, labeling etc and then to extend the AC adapter wire and take a few more photos, collect all the documentation and wrap it up. !!!
I will follow up with some photos and say many thanks again after I have all the details finished.
It is working perfectly again!
I did discover that when trying the display on/off system by placing the "switch" in the ground leg of the two output ICs, that I had brought out
a new ground lead and I failed to restore the regular ground connection....so proper ground again and it works. , and the P channel FET works fine as well. Just finishing some tidying up of wires, installing power jack on box, labeling etc and then to extend the AC adapter wire and take a few more photos, collect all the documentation and wrap it up. !!!
I will follow up with some photos and say many thanks again after I have all the details finished.