The knob to start the drying cycle is not working properly. I have to turn the knob to the right (start) to have the dryer go on. When I turn it and hold the knob in the start posision the dryer works. If I let go of the knob it goes back and the dryer stops. I interchanged the knob and its the same, the rod where its on is good. What can be wrong. Please help.
Thank you