Dishwasher Driving Me Crazy

My dishwasher seemed to work whenever it felt like it. Sometimes you could push the normal button and it would run like it was suppose to and other times it would not. I finally had enough and called a repair guy. He said I needed a new control board. I ordered a new board and replaced it and it worked once and went right back to doing what it was doing before I put in the new board. I am confused. Help!!!

I would check all your connector pins for a loose one, could try a non-residue cleaning spray on all connectors while plugging them in.