My dishwasher has no power going to it at all. The control panel will not react to any touch. I have checked the fuses and all are ok.
Here is your parts breakdown
Model MDB5600AWW
Here is a service manual and tech sheet
http://www.servicematters.com/maytag_library/docs/16021814.pdf
http://www.servicematters.com/maytag_library/docs/16023063.pdf
The most common cause is a bad door latch or switch as long as you are sure the unit is getting power.
Best way is to check it is with a multimeter.
The unit did indeed lose the handle about a year ago. It came right out and cracked. Can this be causing the problem? If so, can a new handle be ordered and installed?
Yes!!!
Just look at the parts breakdown and service manual to see what parts you need, then order them.