I've been having problems with my 70 series Kenmore dryer:
About 4 months ago the motor went bad so I replaced it. While I was at it I cleaned the entire dryer exhaust.
About 1 month ago the dryer would not come on (cold) and the thermal fuse (the long white one) did not have continuity so I replaced it and the dryer worked fine.
Now the dryer works for some amount of time and then shuts off completely. When you hit the start button you here a thud or click like the motor relay is kicking in but it does not go. Let the dryer sit for ten minutes and it will work again.
It seems like I have some sort of heat related issue, hopefully it's not the motor. While I was changing the motor there appeared to be some sort of device attached to the burner shroud and I may not have gotten the wires back on correctly? I think there may also be some sort of thermostat near the thermal fuse at the back of the unit. I'm pretty much confused at this point because I can't seem to correlate the wiring diagram with the actual hardware with regards to thermal devices.