No need to purchase a new super feeder if yours has quit working.  Quickest way to render your Super Feeder like new if upper housing is fine.  This complete bottom is ready to slip into your present housing. You get a brand new electronics board, motor, gearbox, special plastic screwdriver for the feed controller, metal connectors/jack plug and all.  Nothing to solder or assemble.  All you will need to do is remove 6 small screws under the dispenser that attach the floor to the upper housing, remove the present bottom floor, insert this new bottom and re-install the screws.