What was found
RAISED LANDING GEAR AFTER TAKEOFF AND EXPERIENCED EXACT SAME SITUATION AS OCCURRED ON 7/17/96. RAISED GEAR HANDLE AFTER TAKEOFF AND GEAR DID NOT RETRACT. RED LIGHTS CAME ON (UPPER LT ONE CAME ON AND THEN WENT OUT). GREEN STAYED. CYCLED AND SAME PROBLEM. REPLACED LEFT MAIN LANDING GEAR AND WIRE HARNESS AND SENSOR. REPLACED, ADJUSTED AND SECURED PER EMB MM 32-61-00. OPS CHECKED SEVERAL TIMES AND OPS CHECK GOOD ON GROUND WITH NO PROBLEMS.