I would try replacing relays that plug in by the fuse panel to the right of the seat. They should be labeled on the underside of the panel. Ours was giving us trouble this summer, when you hit the button the chime beeped and the light came on saying it was unloading, but it wasn't. Replaced the "auger" relays, works fine now. Note that the "auger" relays control the unloading, while the "unloader" relays control the unloader swinging in and out.