Thomas C Long Beach , MS April 20, 2015 My dryer had a stripped knob and it seemed likethe timer switch may not be working properly I replaced the knob first and then checked it out. As it turned out, all it needed was the knob. The repair was as easy as ordering the part from Appliance Parts Pros. 59 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes