Our Beaver is a 2004 Marquis. Several years ago, our streetside, electric, bedroom slide would not retract. The switches were good and the power was good. When a friend's son, a United Airlines mechanic, came to look at it, he tugged gently on the wires under the bed that are attached to the motor and brake. The wires just came easily off their attachment points. The slide had gone out okay but would not retract, and we also were in an RV park. In ten minutes he had checked the switches, breakers, and power, and adjusted the in-and-out stops. We lifted and blocked up the bed, and he tugged on the wiring which immediately uncovered the problem. He had the bed working again in thirty minutes total time from arriving. He moved the wiring a bit and fastened it to the side of its prior position such that the wiring would never again get caught on the under-bed mechanism and would be clear of any catch-points.
Good luck!
