Barbara B Centreville , VA August 07, 2016 Appliance: Model WHIRLPOOL DUET DRYER Bad interface board I replaced the interface board after reading the comments on this page that helped me pinpoint the problem. Special thanks to the customer with the idea to use a 5/8in socket to hold the four prongs to remove the control knob. That was a useful trick. I'm a single mom of four and on a tight budget. This repair saved me tons and my dryer is working like brand new. Fyi I used a tiny flathead to remove the star screws, it worked fine. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes