As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: SMALL VIBRATION IN FORWARD GALLEY THEN HAD A ELECTRICAL SMELL IN CABIN FOLLOWED BY THE VENTILATION BLOWER TRIPPING OFF SWITCHED TO BLOWER OVERRIDE. REMOVED AND REPLACED EXTRACT AND BLOWER FAN IAW IAW AMM 21-26-51.