This is 14 month old “Quiet Series 400”. I believe the problem lies in the Touch pad but:
Symptoms: No lights or response to touch. When i flip breaker I get the "insta wash " to light. and I get a short wash. After that nothing again.
Touch pad lites have been goofy for some weeks according to my wife.
Any ideas. Neil
Here are your parts
Replacement parts for MAYTAG MDB9601AWW | AppliancePartsPros.com
Here is a tech sheet and a manual
http://www.servicematters.com/maytag_library/docs/16026946.pdf
http://www.servicematters.com/maytag_library/docs/16021814.pdf
Sounds more like a control board problem than a keypad problem.
You could try to get into the diagnostics mode.
You could try the following connection cleaning.
If that does nothing check the keyboard’s switches with a meter, see the tech sheet.
If it checks out OK then it is probably the control board that is shot.
Connection Cleaning
Unplug the unit
Open it up
Remove the ribbon cable from the keypad to the control board at the control board.
Clean the edge connector.
If it is the type where there is not a connector just the insulation is removed, it can be cleaned with a pencil eraser. Do not use an ink eraser as it is too abrasive.
Check the tracks in the ribbon cable for hairline cracks. A magnifying glass helps here.
Would not hurt to clean the connector on the board. Use electronics contact cleaner or isopropyl alcohol and a tooth brush. Be gentle and do not reconnect till all the solvent evaporates.
Reconnect everything and give it a try.