I’m sure that there are some appliances guys on the board..in the meantime., I’ve made pretty extensive use of the forums at partsdr.com . Yes, they are selling you the parts...but their pice is the same or less than the local appliance parts store sells them for even when shipping is included. And they are super at diagnosing your problem as most responses are from employees of the site who seem to k ow what they are talking about. Pasted below is a link to the one of the threads dealing with your issue.
http://forum.partsdr.com/showthread...l-Duet-Dryer-continually-blowing-thermal-fuse
http://forum.partsdr.com/showthread...l-Duet-Dryer-continually-blowing-thermal-fuse