What was found
JUST PRIOR, TOP OF CLIMB FLIGHT ATTENDANTS REPORTED ACRID ELEC SMELL, SMOKE & FUMES. QRH PERFORMED, SMELL IMMEDIATELY DISSIPATED. LANDED AS PRECAUTION. UPON INSPECTION OF OVERHEAD LIGHTS FOUND AFT LT LED LIGHT ASSEMBLY CEILING MOST AFT SECTION, BURNT OUT. REPLACED IAW 33-22-00. INSPECT IAW AMM 05-51-26-800-801CL. SUSPECT A PLASTIC BAG BETWEEN A SEAT FRAME & POWER BOX UNDER A PAX SEAT IN AFT CABIN ROW 38 & A LIGHT ASSEMBLY AS PROBABLE SOURCE.