What was found
UPON LANDING AT DEN AND GO-AROUND, NOSE GEAR WOULD NOT CLEAR ON GEAR RETRACTION. ON SELECTION OF 'GEAR DOWN' NOSE GEAR INDICATOR DISPLAYED A RED GEAR UNSAFE LIGHT. GEAR EXTENDED AFTER MULTIPLE ATTEMPTS USING THE ALTERNATE LANDING GEAR EXTENSION PROCEDURE. REMOVED AND REPLACED NOSE LANDING GEAR SOLENOID SEQUENCE VALVE IAW Q400 AMM 32-31-71-400-801. BLED NUMBER 2 HYD SYS IAW Q400 AMM 29-10-00-870-802. PERFORMED LG EXTENSION AND RETRACTION FC IAW Q400 AMM 32-31-71-720-002, 25 CYCLES. NO DEFECTS NOTED. OPS CHECK GOOD.