I checked power to oven and range and found it was good. I then removed power and inspected the ovens elements. The lower baking element was burned and cracked. I removed the two screws holding the element to the rear of the oven, disconnected the spade clips and took the element out. A portion of the element disintegrated as it was removed. The problem was obvious. I then went on-line to ApppliancePartsPros , located our Jenn-Air model, found the correct illustrated parts breakdown where I found the correct part number. I ordered a replacement lower baking element. The second morning after ordering the part it was delivered. I installed the element in reverse order from its removal, applied power and tested. That evening we were making a holiday cake. By the way I am a double amputee.