We were given a Maytag Quiet Series 300 dishwasher. My husband hooked up a cord on it so we could test it before installing. When plugged in there is no response on the control board. Does the water need to be hooked up just to test it? Could the control panel be the problem? 
Here are your parts
http://www.appliancepartspros.com/partsearch/modelsearch.aspx?model=MDBTT60AWW
Here is the tech sheet
http://www.servicematters.com/maytag_library/docs/16026393.pdf
As far as I know unit does not need water hooked up to test.
I would put a quart or so of water into the machine before testing.
Pumps do not like to run dry, you will have to cap off or install the drain hose and wire it up to keep the water in the pump.
Most common cause of no power is one of the door switches not closing.
Hello,
I am having the exact same problem with the same model.
Regarding denman’s response; how do you know if one of the door switches is not closing? Is it the latch near the top that is a door switch> If others, where are they?
thank you very much,
monnie