As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 4199, CREW REPORTED THAT THE FA DETECTED A BURNING ODOR IN THE GALLEY AREA ON TAXI. MAINTENANCE LATER FOUND ODOR TO BE ORIGINATING FROM SEAT 1A PSU AREA. AIRCRAFT REMOVED FROM SERVICE. REMOVED AND REPLACED CONTROL MODULE ASSEMBLY FOR PASSENGER CABIN LIGHTS IAW AMM 33-21-01. AIRCRAFT RETURNED TO SERVICE.