As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON TAXI OUT, F/A NOTED STRONG ELECT SMELL FROM MID OF ACFT ROW 1-15 NIGHT PORTION OF LIGHTS INOP. RETURNED TO GATE. MAINT FOUND NO ELECT SMELL WHEN BACK AT GATE. SUSPECT NIGHT LIGHT TRANSFORMER. PULLED AND CLAMPED C/B FOR LIGHTS AND DEF PER MEL 33-00-02.