What was found
ON TAKEOFF AT BDL GEAR WOULD NOT RETRACT, COMPLIED WITH ECAM AND QRH PROCEDURES RETURNED TO KBDL UNEVENTFULL APPROACH AND LANDING. PERFORMED BITE CHECK ON PROX BOX PER TSM 32-61-00, FOUND BOX FAULT LIGHT ON. SENSORS ALL CHECK GOOD. CHECKED BOOGIE PITCH DAMPERS FOR PROPER SERVICE FOUND TO BE GOOD PER M/M 12-12-32. REMOVED AND REPLACED PROX BOX PER M/M 32-31-71-4, OPS CHECK GOOD.