What was found
FLT#1691, JFK-LIR. ' ( PACKS )ON DESCENT, NOTICED THE CABIN TEMP INCREASE TO 76-78DEG TURNED TEMP VALVE KNOBS TO A COOLER SETTING. BUT NO RESPONSE TURNED THE HOT AIR VALVE OFF AND TEMP COOLED SMELT HOT SMELT HOT IN IN COCKPIT BEFORE THE CABIN COOLED OFF. TURNED THE HOT AIR VALVE BACK ON AND OPS NORMAL. ON LANDING H3 AND 4 FLIGHT ATTENDANTS CALLED COCKPIT TO ADVISE OF A FUME EVENT IN THE AFT CABIN. EXPLAINED THE ISSUE HOWEVER THEY SAID IT WAS A DIRTY SOCK SMELL. WHICH THE FLIGHT CREW DID NOT NOTICE. PERFORMED TSM 21-61-00. NO FAULTS NOTED, FNC OF COCKPIT & CABIN TEMP CONTROL CHECKS GOOD. OK FOR SERVICE.