My roper dryer clicks but wont start?

I have a roper electric dryer. It is about 3 years old. When I try to start it, it makes a click sound one time when I push the start button. I have checked the fuse with a jumper wire and have checked the door switch with a jumper wire. Also in will only click one time and to get it to click again you have to trip the door switch again. I dont know what to do next.