As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IAH - FLIGHT 2452, DURING PREFLIGHT INSPECTION THE CREW REPORTED AN ELECTRICAL ODOR IN THE CABIN. MAINTENANCE INSPECTED THE ACFT, AND REMOVED AND REPLACED THE LIGHT BALLAST AT ROW SIX. OPERATIONALLY CHECKED WITH NO DEFECTS, AND THE ACFT WAS APPROVED FOR RETURN TO SERVICE. (S)