What was found
F/A AND PASSENGERS REPORT ELECTRICAL BURNING SMELL IN CABIN (MORE PRONOUNCED IN AFT CABIN). TURNED OFF CABIN LIGHTING (ALL) GALLEY OVENS AND EQUIPMENT, AND INFLIGHT ENTERTAINMENT SYSTEM. T/S AND FOUND CABIN AIR RECIRCULATING FAN VALVE INOP. REMOVED & REPLACED LEFT CABIN AIR RECIRCULATION FAN AS PER AMM 21-25-00, ALSO PERFORMED TEST, TEST PASSED AND AS A PRECAUTION REPLACED HIGH EFFICIENCY FILTER AS PER IPC 21-25-01-10A, NO MORE BURNING SMELL, A/C OK TO SERVICED. ROTABLE PARTS CHANGE WAS INDICATED - TT 1376293, S/N OFF 01109 IPC REFERENCE 21-25-00.