What was found
UPON RETRACTION AFTER TAKEOFF ALL OF THE LANDING GEAR RED AND GREEN LIGHTS ILLUMINATE WITHOUT COMPLETING GEAR RETRACTION. WHEN RECYCLED, LANDING GEAR ONLY RETRACTS AFTER ABOUT A 5 SECOND DELAY AND EXTENDS NORMALLY. PERFORMED MULTIPLE GEAR SWINGS, COULD NOT DUPLICATE. REPLACED LANDING GEAR CONTROL BOX FOR TROUBLESHOOTING. OPS CHECK GOOD. P/N 120-38594-501, S/N ON: 120060, OFF: 148922-305.