I replaced all three thermal fuses even though I believe two of them were okay. It was easy. All I had to do was extract the double oven from the wall (that was the hardest part). I put it on some cardboard to protect my floor. Then I took off three panels with about 40 screws. There was one fuse on the back of each oven and other up by the motherboard. The parts took about 5 minutes to replace and another hour to put it all together again. Easy and I am not a mechanic. Saved me much money.