As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AT CRUISE THERE WAS AN ELECTRICAL SMELL IN THE AFT GALLEY AND A HEAVY VIBRATION IN THE FLOOR AREA. WHEN THE CB FOR THE CHILLER THAT COOLS THE FOOD CARTS WAS PULLED THE VIBRATION STOPPED AND THE ELECTRICAL SMELL ABATED. AS PRECAUTIONARY ACTION DEACTIVATED BOTH CHILLERS AT AFT GALLEY. PULLED CB/S AND COLLARED. FWD TO MCO PER MEL 25-20-01C.