Juan M Poinciana , FL September 10, 2020 Appliance: Hot Point Electric Dryer HTX21EASK0WW Hot Point Dryer Htx21eask0ww: Dryer wouldn't start. How to replace Dryer Control Knob. My wife was doing laundry, all of the sudden dryer wouldn't start. Not an expert but I figured out that the problem was the timer, so after doing some research found the best prices for the parts i needed at Appliance Parts Pros. Quick delivery and perfect fit. 2 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes