What was found
ORD - FLT 1920 - AFTER TAKEOFF DURING CLIMB, FLAPS WERE RETRACTED AND A AMBER LEADING EDGE FLAP LGIHT ILLUMINATED ALONG WITH AN AMBER NR 7 SLAT LIGHT ILLUMINATED. FLAPS WERE RETURNED TO 2 DEGREES AND RESELECTED TO 0 DEGREES, LEADING EDGE FLAP AMBER LIGHT ALONG WITH A GREEN EXTENDED LIGHT ILLUMINATED ON TEST PANEL. ALTERNATE CHECKLIST WAS FOLLOWED. AIRCRAFT LANDED ORD WITHOUT INCIDENT WITH NORMAL FLAP CONFIGURATION. REPLACED NR 7 SLAT ACTUATOR. OPS CHECK NORMAL. SYSTEM LEAKED AND GROUND CHECKED NORMAL OPERATION. (M)