I have an older Maytag DE7600 that has worked great since I purchased it used. I have been having a problem with it completely finishing a cycle. Sometimes when it reaches the end of the cycle the buzzer stays on and the heater will stay on but the drum is no longer spinning. If I open the door and close it the buzzer still goes off. If I open the door and spin the drum by hand some I hear a switch click, the heater goes off, and when I close the door the buzzer no longer goes off. I replaced the timer so I know that's not whats wrong. Any ideas?