Jerry O Broken Arrow , OK November 20, 2015 Appliance: Whirlpool Electric Dryer LER4634PQ0 Whirlpool Dryer Ler4634pq0: Dryer would not start. How to replace Start Switch. Thermal fuse was open and start switch was stuck in the closed position. Replaced both along with a new heating thermostat. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes