Went to bed, parts were tumbling, next day tumbler was stopped. Took the inline switch apart looking for a fuse or something but all was OK. Shoot. Removed 2 screws and 3 rubber feet from bottom of unit for quick look and all appeared OK and no fuse found. Shoot again. I disturbed the wires with the stak on connectors and low and behold one wire came off that was crimped. Phew lucky break (pun intended) . Need to attach new connector. This unit is 15yrs old and has a week's worth of hours on it. I don't know how much they are now but I bet they are more than I paid.