What was found
F/A & PASSENGER SAW SMOKE AND FUMES COMING FROM LT SIDE OF CABIN ROW 7A&B. FUMES DISSIPATED ON DESCENT. LANDED ARFF CHECKED OUT. TAXIED TO GATE. FUMES AND SMOKE BECAME NOTICEABLE AROUND 18000 FT & DISSIPATED THROUGH DESCENT. PERFORMED OPS TEST OF ALL CABIN INT LIGHTING IAW AMM 33-21-00. FOUND 1 PAX READ LIGHT INOP REF NR 21. DROPPED ALL PSU'S AND OPS CHECKED AND INSPECTED PCBS. NO DEFECTS. INSPECTED ALL CONNECTORS FROM ROWS 4-11. NO DEFECTS. REMOVED CEILING PANELS & INSPECTED ACCENT AND EMERGENCY AND OVERHEAD LIGHT STRIPS. NO DEFECTS (ROWS 4-11). INSPECTED AND TESTED ALL LAV (FORE AND AFT) AND GALLEY EQUIPMENT. ALL OPS CHECK GOOD. INSPECTED AVIONICS COMPARTMENT. NO DEFECTS NOTED. FOUND ACFT TO BE OK FOR SERVICE.