It depends on the type of machine. -- If you have a counter top model you need to remove the screws that secure the top and sides. Normally there are 2 screws on each side and 7 to 8 screws along the back edge. Once you remove the cover, on the side, behind the control panel, near the top, you will find the fuse block. -- If you have a model that hangs above the stove you need to remove the grill that runs along the top. There are 2 screws approx. 1/3 the way in from each edge. Remove the grill, then look for 1 screw above the control panel. The control panel top will then tilt out. you should be able to see the fuse block.
Make sure that you have more than 1 fuse(at least 2 or 3). This is important because usually there is a fault which causes the fuse to blow. My first fix had a cockroach on the capacitor. Easy fix, but I did not see the problem until after I blew the replacement fuse.