Ned S Deer Park , IL July 27, 2015 Appliance: Maytag Undercounter Dishwasher MDB7749AWM1 Maytag Dishwasher Mdb7749awm1 / : Dishwasher won't start. How to replace Control Panel. If the machine won't start and the buttons light up on the right side and not the left. , it is probably the Panel control and not the control panel they always tell you it is. 1 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes