GEORGE & BETTY : IF your power supply to the seat uses a PLUG to connect the wires coming up out of the floor to the wires coming out from the chair, then examine the connections inside both halfs of the plug. If one of the wires is loose, or has pulled out of it's socket inside the plug, you will not have power. Simple solution is to cut out plug and use butt connectors to reconnect the wires. Good luck, ED
Whenever you want to bypass a plug you should try to use a male and female disconnect to join the wires rather than a butt connector, that way you don't have to cut the wire if you later have to unplug the connector.
George & Betty. The same thing happened to me while in Florida this winter. It was a blown fuse. You don't indicate what coach you have or what chassis. On mine there were two fuse boxes under the dash. I checked all the obvious fuses but could not find one labeled for the power seat. Then I found another fuse box higher up with one of the fuses labled power seat. The label for these fuses is on the side wall.