Dishwasher lights, fills, does not start

Folks, Hi, I have a Maytag just over two years. Recently it began giving problems, the panel would light when you selected your cycle and pressed start nothing happened and the lights eventually went off. I subsequently changed both the touch pad panel and the electronic control board, now when attempts are made to start a cycle it fills and then nothing happens and the lights go off. If you press the start/cancel button after it then proceeds to empty the dishwasher. Can anyone help thanks.