What was found
AIRCRAFT WAS GROUNDED, ON FIRST APPROACH, AFTER PUTTING GEAR HANDLE DOWN, GEAR WARNING HORN SOUNDED, THEN WENT OUT. GEAR DOWN INDICATION SHOWED THREE GREEN AND THREE RED IN THE GEAR HANDLE, THREE GREEN ON OVERHEAD PANEL. EXECUTED A GO-AROUND, RAISED GEAR. ON SECOND APPROACH, THREE GREEN INDICATED AS ONLY TOP BOTTOM (NORMAL INDICATIONS). FOUND LANDING GEAR LEVER MODULE AT FAULT. REPLACED THE LEVER MODULE. OPS CHECKED GOOD.