Steve S New Paris , IN January 01, 2016 Appliance: Maytag Undercounter Dishwasher MDB7749AWW1 Maytag Dishwasher Mdb7749aww1: Start and cancel buttons not working. How to replace Dishwasher Control Panel. Replaced Panel-Cntrl - Parts list (there are 3 different part numbers listed) didn't list the color of the panel's, I needed a white one- did a direct chat with customer service and got the color matched with the correct part number. Part was delivered quickly, I replaced it and fixed the problem. No real way to check the panel, all other components seemed to check good, so I replaced the panel. Replacement was easy - Troubleshooting was a little more difficult Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes