Mark C Cornelius , NC September 05, 2018 Appliance: Maytag Electric Dryer MDE7400AYW Maytag Dryer Mde7400ayw: Bad timer control. How to replace Timer. The control knob on the timer would not start the dryer when pulled. I replaced the timer and now it works perfectly! Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes