As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AN ELECTRICAL ODOR CAME FROM THE AFT GALLEY NR 1 OVEN AND THE CIRCUIT BREAKER POPPED WHILE AT CRUISE PORTION OF FLIGHT. THE FLIGHT WAS RETURNED TO GUM WHERE IT LANDED WITHOUT INCIDENT. THE AFT GALLEY NR 1 OVEN AND CONTROLLER WAS REPLACED. A FUNCTIONAL CHECK WAS GOOD IAW MM 25-36-33.