It could be the control board or it could be the main circulation pump motor or even breaks in the wiring.
One thing you should not do is to attempt to change the PCB until all other components have been checked out both visually and electrically with the correct test equipment and the mains plug removed from the socket or the power isolated.
Well spotted Martin, it was late last night when I answered after a very busy day, family christening at lunch time then down to the city centre to sort out a small plumbing problem and a couple of dishwasher faults for my daughter.
Terry, PM me an e-mail address and I will sned you some ‘stuff’ 😉