As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FT # 90, SAN-JFK. HEARD A LOUD BUZZING NOISE ISSUING FROM NOSE SECTION OF AIRCRAFT; AT SAME TIME FELT A FAINT VIBRATION IN FEET AND BEGAN TO SMELL A BURNING ELECTRICAL ODOR. TURNED AVIONICS BLOWER OFF AND NOISE STOPPED. TURNED EXTRACT SWITCH OFF AND VENTED ODOR OVERBOARD; FOUND EXTRA BLOWER FAN FIN # 20 HQ AT FAULT. REMOVED & REPLACED FAN FIN # 20 HQ PER AMM 21-26-51 OPS CHECK NORMAL, NO MORE ELECTRICAL OR BURNING ODOR. OK FOR CONT SERVICE.