dishwasher stopped working during rinse cycle and now will not turn on?
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Replacement parts for MAYTAG DWU7300AAX Dishwasher - Undercounter | AppliancePartsPros.com
First thing to check is if the unit is getting power.
Could be the breaker tripped.
Then check the wire nuts that often connect it directly to the house wiring or to a line cord.
Next I would check that both the door switches are closed. Both should be 0 ohms when actuated by the door latch.