What was found
PASSENGER REPORTED AFTER LANDING SMELLING ELEC BURNING SMELL & A WISP OF VAPOR FROM A PSU OVER ROW 8 & 9. COMPLIED WITH FIM CH 21-20-00-810-801 NO SMELL OR DEFECTS NOTED IN CABIN AREA. FOUND NR 1 ACM INOPERATIVE. COMPLIED WITH ETN EM-72-034 FOUND NR 1 PACK ACM SEIZED. R & R LT ACM IAW AMM 21-51-03. LEAK CHECKED FAILED. MEL REMAINS OPEN. ACM OPERATIONS CHECKED GOOD. R & R FLEX RUBBER DUCT GOING FROM DUEL TEMP CONTROL VLV TO Y DUCT IAW AMM 21-60-01. OPERATIONS CHECK & LEAK CHECKED GOOD. NO DEFECTS NOTED. MEL ITEM RESTORED. SECURED LOOSE COUPLING ON NR 2 PACK IAW MM CH 21-50-01 MEL ITEM RESTORED ON LEAKS NOTED.