Replaced timer. When I tested the dryer on cooldown the new timer worked. My wife tried it on a load of clothes but the new timer did not advance. I tried again with a load of clothes and it worked for me. I don't understand what the problem was on the wifes first try but the timer ran, stopped the dryer and sounded the buzzer on three more loads for me. Hope I don't have to do laundry now!!!!