What was found
A LOUD NOISE WAS HEARD UNDER FLIGHT DECK AND F/A SMELLED ELECTRICAL ODOR. PROBLEM WAS POSIBLE AVIONICS COOLING SYSTEM. AFTER OVERRIDING SYSTEM, SMELL DISSIPATED AND NOISE STOPPED. ALL SYSTEMS REPORTING NORMAL. FLIGHT CONTINUED TO DESTINATION. *S/D* THE AVIONICS VENTILATION BLOWER WAS FAULTED ON THIS FLIGHT. THE BLOWER FAN (FIN 20HQ) FAILED AND WAS REPLACED DECEMBER 1 IN SAN FRANCISCO PER AMM 21-26-51 DURING C-CHECK. THERE HAS BEEN NO FURTHER OCCURRANCES.