Dishwasher would not work

Major appliance retailer sent out a repairman to diagnose the issue with the washer. They determined the control board needed to be replaced. They wanted twice the price for the part plus an additional two hundred dollars to return and install. Total time to remove and replace the part less than fifteen minutes. I purchhas same issue. Once again the repair people, (another $80.00 for the second service call), say the control board muased the part from Part Select and installed myself. Washer st be replaced. I will purchase another dishwasher.