As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 4500 THE CREW REPORTED A BURNING ODOR COMING FROM AROUND THE MAIN CABIN DOOR. THE AIRCRAFT WAS REMOVED FROM SERVICE. TROUBLESHOT AND FOUND THE BALLAST OVER SEAT 3A TO BE BAD (CAUSING ODOR). REMOVED AND REPLACED BALLAST OVER SEAT 3A IAW EMB AMM 33-21-05. THE OPERATIONAL CHECK WAS GOOD. NO FURTHER DEFECTS NOTED. THE AIRCRAFT WAS RETURNED TO SERVICE.