Gary B Omaha , NE September 21, 2021 Appliance: Maytag Undercounter Dishwasher MDB7749AWW2 Maytag Dishwasher Mdb7749aww2 / : No soap. How to replace Electronic Control Board. 1st off some control buttons were not working. Replace the soap dispenser with a burned-out solenoid on it. Still no soap. Then I replaced the control board---- now we have soap. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes