What was found
DURING PUSHBACK AFT FLT ATTENDANT REPORTED THE AFT GALLEY (PORT SIDE) NO SMOKE/SEAT BELT SIGN HANGING OUT OF SOCKET. WHEN PUTTING SIGN BACK IN THE WIRING STARTED SPARKING, WITH SMELL OF SPARKING. DROPPED ALL ELEC OFF LINE, RETURN TO GATE AREA. FOUND C/B POPPED. AFT GALLEY LEFT FASTEN SEAT BELT TERMINAL INTERFERING WITH FRAME OF GALLEY OPENING. REPOSITIONED TERMINAL. RELAMPED, ALL LIGHTS CHECK GOOD.