What was found
SEA - FLIGHT 2412: F/A ADVISED A ELECTRICAL SMELL TOWARD THE BACK 1/3 OF THE CABIN PRIOR TO PUSHBACK. MAINTENANCE FOUND AFT CARGO CEILING COMPARTMENT LIGHT BURNT OUT, SOCKET CORRODED. CLEANED SOCKET AND RELAMPED. OPS CHECK GOOD. INSPECTED ALL CABIN INTERIOR LIGHTING. NO DEFECTS NOTED. GROUND RAN BOTH ENGINES. BLEED ON AND OFF. NO ABNORMAL SMELLS NOTED. PERFORMED VISUAL INSPECTION OF CABIN FOR ANY BURN SIGNS, NONE NOTED. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.