What was found
CREW REPORTED AN ELECTRICAL ODOR AROUND ROW 4. SELECTED UTILITY BUSSES OFF, LT RECIRCULATION FAN OFF AND CABIN CEILING LIGHTS OFF. ODOR DISSIPATED AFTER A FEW MINUTES. REPLACED LT, AND RT CEILING LIGHT BALLASTS. OPS CHECKED CABIN LIGHTS, AUDIO, VIDEO SYS, PC POWER SYS, LT RECIRCIRCULATION FAN, AND ALL GALLEYS LIGHTS ON. ALSO ODOR CHECKED UNDER SEAT ROWS 3,4,5 LT AND RT SIDE, NO ODOR NOTICE. AFTER 4 HOURS OPS CHECKED, NO ELECTRICAL ODOR. (BOTH REMOVED BALLASTS NO ODOR). OPENED SIX PSU PANELS AT SEAT ROW 3,4,5 LT, AND 3,4,5 RT CHECKED FOR ELECTRICAL ODOR. NO DISCREPANCY NOTICED.