I tested thermostats for continuity as well as heating element, then checked for continuity in heating element case to terminals and bingo! Had short to the element housing. I also replaced the roller bearings and felt seal as this dryer is getting old. There was a good improvement in dry time with the new seal, and it's a lot quieter with the rollers replaced. Everything was easy to do myself, although it took some time to get old felt seal off. I ended up using a dremel tool to get old adhesive off and it cleaned up nicely!