Stumbled upon Appliance Parts Pros web site and after some research bought 2 circuit boards. (UIB) Interface Board AP4501702 and ESEC Relay Board AP5780950. I carefully replaced the UIB board first and it solved the problem. Things like taking the door off can be found on the internet and took me far more time than actually replacing the board. I have never used APP before but understand that the other board is returnable. I am a very happy and future customer.