If your microwave doesn't turn on, there is probably a really simple reason why. When it comes to taking care of your microwave, don't throw your microwave out. More than likely, all you need to do is fix a small part in order to get your microwave working again.
Damaged Ceramic Fuse
Your microwave has a ceramic fuse that is located inside the microwave, near the power cord. In order to access the ceramic fuse, you need to unplug your microwave and remove the back panel.