AppliancePartsPros.com website led me to a defective lower heating element. Replaced the element and all is good.. removing the sheet metal panels to get access to the element was tricky but not difficult. Replacing the panels was much more difficult. Working with sheet metal is always a challenge but well worth the effort in savings on labor costs. Parts diagrams on the site were not very helpful as the metal panels were not all shown in enough detail which I blame on the manufacturer. Once again, AppliancePartsPros.com saved me a bundle on labor and I always enjoy the challenge of doing the work myself.