Robert P Opelika , AL July 11, 2014 Appliance: Maytag Undercounter Dishwasher MDB7709AWW2 Maytag Dishwasher Mdb7709aww2: Light normal heavy start and cancel buttons not working. How to replace Control Panel. Using service literature inside the dishwasher, isolated problem to front control panel. Replaced control panel. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes