Use this site and it will walk you through the trouble shooting until you have the problem isolated and the component you need identified. I have found these people very resourceful and their parts are sent on time and thier prices are good. I have no affiliation other than being a satisfied customer. In the column on the left side of the main page you will see a heading "repair help" start there
http://www.repairclinic.com/0001.asp
http://www.repairclinic.com/0001.asp
