Hey MZ Skeeter,
Thanks for reply! Finally got through to USCutter tech support. They determined it is the motherboard. It was $80 and figured it was a hell of a lot cheaper than a new unit or new IMac! It is simply to install and asked about wearing a grounded computer bracelet and they said yes. I asked about if the motherboard had a warranty and they said to contact them within 30 days if it doesn’t run and all is refunded but shipping back. If I have to buy another plotter, which is recommended and not an arm and a leg? I paid $400 for this one in 2017. BTW I also bought an anti static wire bc I read static can kill the mother board and I always lay vinyl rolls on carpeted floor!