Burton V Newton , IA September 09, 2014 Appliance: Maytag Undercounter Dishwasher MDB7749SBW2 Maytag Dishwasher Mdb7749sbw2 / : Diahwasher did not work. How to replace Electronic Control Board. Replaced electronic control board and control panel 2 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes