What was found
F/A REPORTS ACRID ELEC BURNING SMELL BY ROWS 6 - 15. NO SMOKE OBSERVED. TURNED OFF CABIN LIGHTS AND GALLEY POWER, ODOR DISSIPATED. FOUND SIDEWALL LIGHT BURNED OUT AT 9A. REMOVED BULB, WITH ALL LIGHTS ON NO ELECTRICAL ODOR NOTED. SUSPECT BALLAST. NO ODOR UPON ARRIVAL, REPLACED LIGHT ASSY, OPS CHECKED NORMAL, NO ODOR IN CABIN WITH LIGHT ON OVERNITE.