As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFT GALLEY OVENS EMITTED AN ELECTRICAL ODOR WHILE PREHEATING. OVENS SHUT THEMSELVES OFF AND ODOR WENT AWAY. OPS CHECKED IAW DMC-B787-A-25-32-00, FOUND DEFECT IN OVEN 9C. CIRCUIT BREAKER RESET DID NOT HELP. REMOVED AND REPLACED OVEN IAW DMC-B787-A-25-32-00. OPERATIONAL CHECKED GOOD.