What was found
WHILE CLIMBING THROUGH 24,000, SMELLED AND SAW SMOKE IN COCKPIT. COMPLIED WITH QRH. AFTER GALLEY POWER REMOVED, SMOKE SEEMED TO DISSIPATE. EMERGENCY RETURN TO CVG. RECEIVED NO MAIN DECK ALERTS.(<P>PERFORMED A SMOKE INSPECTION IAW AMM 21-00-21. DURING INSPECTION FOUND THE LT PACK DOOR ACTUATOR MALFUNCTIONED IN THE CLOSED POSITION. THIS CAUSED AN OVERHEAT SITUATION OF THE LT PACK SYSTEM. R&R THE LT PACK DOOR ACTUATOR IAW AMM 21-53-01. OPS CHECK LT SYSTEM WITH NO FAULTS NOTED AT THIS TIME. </P><P>LT PACK CONTROLLER WAS FOUND TO BE INOP, REMOVED AND REPLACED LT PACK TEMP CONTROLLER IAW AMM 21-61-03 OPS CHECK GOOD. OFF PART (S/N: <SPAN>099C-1110, P/N: </SPAN><SPAN>625946-10).</SPAN></P><P>LP 1073441: HIGH POWER ENG RUN COMPLETE AND OIL CONTAMINATION INSPECTION COMPLETE WITH NO NOTED DEFECTS, FUMES, SMOKE, OR SMELL I.A.W. 21-00-21.</P>)