As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
VIBRATION AND NOISE FROM AVIONICS 10 CY FOLLOWED BY ELECTRICAL BURNING SMELL IN COCKPIT AND FWD GALLEY. EMERGENCY DECLARED.-PERFORMED T.S.M. 05-50-00-810-831 FOUND CAUSE OF ODOR FIN # 20 HQ BLOWER FAN, ALL ELECTRICAL SYSTEMS OK. NO BURNING SMELL DETECTED AFTER BLOWER FAN OVER RIDE SEE LOG PAGE 2525931 ITEM #2 FOR CORRECTIVE ACTION