I have GE dryer model DBVH520EJ2WW. It will run for about 5 minutes and then it stops...It will restart itself later...Until yesterday, it wouldn't restart...I cleaned out the lint trap and the line...Took it apart and checked the motor and the belt, they are fine...Now it won't even turn on at all, just beeps twice and flashes the clean lint filter. What is wrong with my dryer?