The thermal fuse keeps blowing, after the first one went, I cleaned the vent tube. It lasted for a few weeks then blew again. I replaced the fuse and the vent tube, and cleaned the entire vent system. Again it lasted 2/3 weeks and blew again. I tested the 4 wire thermostat (2 red and 2 violet wires) red has continuity and violet has approx 692k ohms. After doing some research on your site I removed the heating element and found the upper coil contacting the housing. And from another post, someone had a problem with the motor not working and the heater staying on. From what I can remember I believe the heating element would stay on constantly when turned on, and the door opened. I went to re-check but left the motors thermal fuse out and the wire shorted against the case, long story short the timer sparked. was my original problem the heater element or the motor itself?