My microwave stopped working after I slammed the door.

Slamming a microwave door can cause a fuse to blow. Follow the link below to learn how to identify and replace a blown fuse.

Fuse A fuse is a safety device that will cut off the flow of an electrical current if the current becomes too strong. This action protects your microwave. If a microwave door is slammed hard enough, it could cause the unit's fuse to blow. The first thing you should check if your microwave isn't working is its fuse. The appliance will not work again until the fuse is replaced. How to replace a microwave fuse.

CAUTION: Your microwave oven is capable of giving you a serious electrical shock, even when it is unplugged. We strongly suggest you seek the assistance of an appliance repair technician when conducting any microwave oven repair.