I noted that two other people had the same problem and eventually they determined it was the Oven Control Unit, located behind the control panel. I decided, with the 365 day return policy, that it was worth the risk (of just losing the postage cost) to immediately try out a new Oven Control Unit to see if it fixed the problem. It did. This saved me from having to pull out the unit from the wall and test various components. The replacement of the Oven Control Unit was fairly simple. After turning of the power, of course, I double-checked the part number and compared the layout of the unit to verify that the replacement part was the correct one. Then, I made a note of where the various differently colored wires attached to the unit before I started. For each wire attachment, I had to use pliers to remove it (except for the multi-pin and ribbon connections). The ribbon connection required a slight jiggle to pull it out completely - it got stuck after pulling it out about 1/4-1/2 inch - by moving the ribbon slightly away from the edge of the control unit, it freed it. The whole replacement process took about 1 hour.