As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
F/A SMELLED SMOKE AND SAW SMOKE COMING FROM BEHIND THE MICROWAVE OVEN. ON FEB. 4, 2011, THE ARTICLE IN QUESTION WAS RECEIVED AT REPAIR STATION. INVESTIGATION FOUND THAT A WIRE INSIDE THE METAL POWER SUPPLY BOX HAD CHAFED ON AN ADJACENT COMPONENT. THE METAL POWER SUPPLY BOX IS CONTAINED INSIDE THE METAL MICROWAVE ENCLOSURE. PREVENTIVE ACTION IS TO SECURE ALL THE WIRING WITHIN THE MICROWAVE TO PREVENT CHAFING.