Hmmm. I also would be suspicious of the power in your house. Can someone from the power company come and check where it connects to the house and the pole or underground?A friend of mine kept "burning out" dishwashers and microwave ovens. Complaining about bad brands. I suggested the power company. They did come out and found the line to the house was rotted almost all the way through. Once that was fixed, everything else worked great.