I have a maytag dishwasher that all of the buttons on the front panel work except for the start and delay buttons. any suggestions?
Here are your parts
http://www.appliancepartspros.com/partsearch/modelsearch.aspx?model=MDBH945AWW
Here is the tech sheet
http://www.servicematters.com/docs/wiring/TechSheets_11_17_09/Schematic%20-%20W10111827.pdf
Check the control panel (keypad) pin-out listing to see if the delay and start have a common circuit track (see the tech sheet). Then check them with a meter. If OK then control panel is OK and the control board is probably the cause.
You may want to try the following
Connector Cleaning / Checking
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.