Microwave made a scary noise
This morning when I pressed Start on my microwave it emitted a huge SNAP, very loud, and similar to the crack of a .22 rifle. Made me jump back and shield my face. This happened once before, about two weeks ago. Both times the microwave worked fine as usual, and made no sound the next time I used it.
Any idea what this could be? I don't want to create a dangerous situation by continuing to use it. It's 10 years old, BTW. A Whirlpool Gold over the range.