I have worked on some White's machines and have been able to make repair for some friends. Mostly TDi and Pi Beach Machines. I can say that you can try Centerville Electronics in Virginia. they are the "Official" White's repair center now. They should have some answers for you as far as repairs or may help finding a new board. I do some repairs but it is time permitting only, currently I am swamped with my day job. Good luck!