What was found
ELECTRICAL SMELL MID CABIN UNLOADED ACFT & CHECKED CABIN ELEC EQUIP INCLUDING SEU, READING POWER SUPPLIES & LIGHTING BALLASTS. NO NOTED EQUIP INOPERATIVE SUCH AS LIGHTING OR PASSENGER PSU'S. OPERATED PACKS, CHECKED AIR QUALITY ABOVE CEILING PANELS & E & E COMPARTMENTS & NO SMOKE ODOR NOTED, OK TO CONTINUE.