As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE FLIGHT ATTENDANT REPORTS ELECTRICAL BURNING SMELL IN CABIN. AIRCRAFT RETURNED TO GATE AND THE LIGHTS WERE DEACTIVATED. A HIDDEN DAMAGE INSPECTION WAS PERFORMED AND REMOVED BULB FROM THE SIDE WALL LIGHT AT ROW 7AC. THE BALLAST AND BULB HOLDER WERE REPLACED.