When our electric bedroom slide stopped working several years ago, the problem was a broken wiring connection to the motor. Our friend's son, an airline maintenance technician with Continental-United in Houston, checked the power supply at the panel, then the wall switch, then we lifted the bed and he lightly tugged on the wiring. The wires to the motor immediately came off. In less than 30 minutes, he fixed the broken connection and changed out several cheap inline connectors. We have had no problems since.