The repair person we called out said, without touching the machine, that it was a circuit board and to trash the machine. It turned out I needed a new timer knob and timer. I ordered through the AppliancePartsPro live chat on a Saturday, the person directed me to right part, it came by Tuesday and by Tuesday evening, after about a half hour, the dryer was good as new. I only wished I had watched the AppliancePartsPros how-to videos on youtube before I ever called the repair shop. It would've saved me days and the cost of the visit.