Brand: Montgomery Ward Microwave/Convection Oven-Counter Top Model #: KSA-8294A S/N: 14765 After I had used my convection oven to heat up an item, I touched a button to set up the microwave. All the power shut down in the oven and the display ... like I had blown a fuse. Is it easy enough to R&R the fuse? Is the fuse located in back of the rear panel where the power cord enters the back? And is the fuse in question readily available in certain hardware store or Sears?