As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT ATTENDANTS REPORTED BURNING SMELL NEAR FIRST CLASS/ COACH DIVIDER. A/C ON APU POWER/AIR FOR 3-5 MINUTES. TURNED OFF STATIC PORT HEATERS, ODOR DIMINISHED. DEACTIVATED STATIC HEAT REMOVING 4 CANNON PLUGS AT HEATERS. FWD TO MCO AND PLACARD. SUBSEQUENTLY REPLACED THE CAPTAINS PRIMARY STATIC PORT HEATER ON LOG NR 083545003.