What was found
EXPERIENCED AN ODOR, FUME EVENT DURING CRUISE. APPROACHING 2.5 HOURS AFTER T/O F/A'S AND PASSENGERS REPORTED STRONG ELECTRICAL ODOR NEAR PASSENGER DOOR 2L. THE FLIGHT CREW DEACTIVATED THE LT AND RT UTILITY BUSSES AND THE ODOR QUICKLY DISAPPEARED. IFE C/B IN COCKPIT WAS PULLED. AFTER A PERIOD OF TIME THE UTILITY BUSSES WERE RESET, NO FURTHER PROBLEM. IFE SYSTEM REMAINS UNPOWERED. FLIGHT CREW DID NOT FILL OUT SMOKE & FUME REPORT. INSPECTED CABIN, LIGHT SYSTEM AT DOOR 2 LT NO ODOR. DEACTIVATIVE IFE SYSTEM IAW MEL 23-37-01A. COMPLETED ODI CHECK LIST AND NO PROBLEMS FOUND WITH LIGHT BALASTS, GALLEY EQUIPMENT OR IFE. WHILE TESTING AREA, DOOR HEATER FOUND C/B FOR NR 2 DOOR HEATERS POPPED. NO OTHER DEFECTS FOUND.