Will not start - some lights out

Dishwasher Repair
1

On touch pad:
Heavy, Light,Rinse,Insta, Auto, Delay,ToughScrub,High Temp buttons all work fine.
Norm,Start/Cancel,HeatedDry,Sanitize will not light up

Door switches test ok. Cleaned ribbon connector.

Usually run washer on Normal then push Start.

Does the touch pad wear out? How can I test it to see if buttons are working?

Thanks, Mark

2

Here are your parts
Replacement parts for MAYTAG MDBTT70AWB DISHWASHER- UNDERCOUNTER | AppliancePartsPros.com

See the attachment for the tech sheet.

[COLOR=“DarkRed”]Does the touch pad wear out?[/COLOR]
Yes but usually the unit wears out before the switches.
But like anything else some do just fail.

[COLOR=“DarkRed”]How can I test it to see if buttons are working?[/COLOR]
Yes see the tech sheet for the procedure.
You will need a meter.

The normal way to troubleshoot is to check the control pane (keypad), if it checks out OK then replace the control board.
Still a bit of a crap shoot but your odds are better.
16026393.pdf (892.6 KB)