From Wikipedia
http://en.wikipedia.org/wiki/Microwave_oven
A microwave oven consists of:
* a high voltage transformer, which passes energy to the magnetron
* a cavity magnetron, which converts high-voltage electric energy to microwave radiation
* a magnetron control circuit (usually with a microcontroller)
* a waveguide
* a cooking chamber
Something in this list is probably defective...
Peccavi
March 2009