As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APPROXIMATELY 2 MINUTES AFTER THE NR 2 ENGINE WAS STARTED AND THE NR 2 GENERATOR WAS SWITCHED ON. CREW REPORTED A VERY STRONG ELECTRICAL SMOKE ODOR IN THE PASSENGER AND CARGO COMPARTMENTS. MAINTENANCE FOUND THE ODOR TO BE COMING FROM OVERHEAD LIGHT AND WINDOW LIGHT BALLASTS AT SEATS 3, 4 AND 5A, REPLACED BOTH BALLASTS.