As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BURNING SMELL IN AFT GALLEY STRONG ENOUGH TO BE DETECTED OUTSIDE SEEMS TO GO AWAY WITH UTILITY BUSSES OFF FOUND AIR COMPRESSOR IN AFT BULKED POSITION VERY HOT. REPLACED THE POTABLE H2O COMPRESSOR AND UNLOADER CHECK VALVE. SYSTEM OPERATION IS NORMAL.