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Hi,
Based on a typical Maytag dishwasher
electrical diagram, there would only be two (2) possible components that could cause "...
completely dead. Absolutely no power...":
1. Door switch;
2. circuit board (of the control panel)
Of course there may be others depending on the electrical system used by your particular model. Perhaps it would be a good idea if you can post back your units specific model number.
In any case, you would need a DVM to measure resistance and/or voltages. Normally there would be two (2) door switches. In some models they are ganged together while in some they are split left & right.
Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.
Good luck and kind regards.
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