Luis A Brandon , FL June 26, 2014 Appliance: Model MDB750AWS No power to the unit power was good to the entrance point at the botton of the unit First, I replace the control board and that was not the problem, return the board and proceded replacing the panel control. That did the trick. Read More... Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes Tools: Nut Drivers, Screwdrivers