Sounds like the coin door interlock switch is either open or closed when it should be closed or open or it just needs to be replaced. Or a wire fell off of it or is loose. WWFRR has that double interlock switch and I think one part of the switch comes out and the door pushes it in and the other switch can go in or be pulled out. Try to pull or push it in and try different combinations. I forgot the exact combo of how it should be.