Hi, I'm Pete. Welcome to JustAnswer! I'm reviewing your question now, and will post back with your reply ASAP.
Shirley, if the organ is powered on but the keyboard is not working then the Leslie motor may not be faulty.
It will need to be opened up to have the motor checked.
Let me know if you intend to carry out the repairs yourself, or if you are looking for a repairer in your area?