My Amana LEA60AW has been shutting off about ten minutes into it's cycle. After it shuts off we have to wait 30+ minutes before it will start again and it will just shut off again after another five minutes or so. This has been an ongoing problem and is getting worse. It used to run for 30 min, then quit and is now down to ten or so. I've checked the lint filter, it is good, I've cleaned out the interior of the dryer so there is no lint buildup around the motor or anything like that. It also does not matter whether the heat is on or not. Any one got any ideas as to what the problem is and how to fix it?