Put radioactive nuke suit on. Unplug microwave, used philips screw driver and took glass plate from the bulb cover, unscrew burnt bulb and replace with new bulb. Put cover back over replacement bulb, insert screw and tighten. Then used philips screw driver to take two screws that held the front control panel in place, then it folded down, then checked 20 amp fuse, it was burnt, replaced it with a new one. Folded control panel, inserted two small philip head screws back into control panel. Then plugged microwave back in, set the clock, tested it with cup water. Worked like a brand new one. Take off radioactive nuke suit. Just kidding about the radioactive nuke suit.