ZSC2200NBB - Overview

Turned out the issue was easily solved by replacing a single, inexpensive fuse.

First off, UNPLUG THE MICROWAVE.

The fuse is located under the plastic grill at the top of the microwave. It's held on by two screws. Once you've removed the screws and taken off the plastic grill, you go to the right side of the microwave and remove another screw that holds a small metal grill in place. Removing the small metal grill is probably the toughest part of this repair. You kind of have to rock it back and forth a bit to get it to release. Once that's off, you can get to the fuse. I removed the burnt out one with a pair of needle nose pliers. I also put a small piece of cardboard under the fuse when I did this so I didn't accidentally drop it into the innards of the microwave. I did the same thing when I replaced the new fuse. I then plugged the appliance back in and made sure it worked. Once that was confirmed, I replaced both grills.

Turned of f the circuit breaker to the microwave. Unscrewed the cover (1 screw!) popped out the old bulbs and plugged in the new ones, using the bubblewrap as a handle to be sure my skin didn't touch the light bulbs so the oil from my hands didn't damage or shorten the life of the new bulbs. Turned the circuit back on. That's it!

Unscrewed the light cover beneath the microwave with a phillips head screwdriver. The bulb is very tiny and has 2 straight parallel prongs that slide into 2 small holes. Grab bulb from both sides with each hand firmly and slide STRAIGHT out (no twisting or pushing). Don't worry about breaking even though it may take a fair amount of pressure to pull out. New bulb arrived within a couple of days. Due to high shipping cost, suggest buying 2 or more bulbs at once. Bulb is often used as a kitchen night light so that is probably why I only got 9 months out of it.