As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON FLIGHT 3648 THE CREW REPORTED AN ELECTRICAL BURNING SMELL IN THE GALLEY. THE AIRCRAFT WAS REMOVED FROM SERVICE. FOUND BURNED LIGHT BALLAST AT SEAT 3 B & C. REPLACED THE BALLAST IAW EMB AMM 33-21-04. THE AIRCRAFT WAS RETURNED TO SERVICE.