KitchenAid DW - KUDE70FVSS1 Touchpad Issues?

[BobbyC777]

Our KitchenAid dishwasher (KUDE70FVSS1) user interface is very sporadic. Often times the CANCEL light is the only button that will light up. Then magically it appears normal. If I take advantage of when it appears to be working my 1 Hour Wash cycle goes pretty well but then the START/RESUME light will blink forever towards the end of the cycle. (The dishes seem clean.)  If I press RESUME and shut the door the light continues to blink. I started off by replacing the Control Board (with a used one) but symptoms persist. The touchpad (WPW10056368. W10056368, W10056365) is no longer available and I have not found any used ones.  

Before replacing this 15 year old DW I thought I'd see if anyone here had any suggestions.  Thanks!

Bob
North Carolina

[Nathaniel Peterson]

Displays on these usually go bad from water infiltration. Have to check for 14 volts between the three wires going to the display while it's acting up. 

[BobbyC777]

Thanks. There is a 15-pin ribbon cable between the touchpad and the main control board. So when you say "three wires" I'm not sure we are talking about the same parts.  And the only display are the lights on the buttons plus the Washing/Drying/Sanitized/Clean indicators.