KitchenAid KUDP01ILBS6 stopped working. No panel lights, no action when pressing blister buttons. Thermal Fuse has continuity. Heating element looks (visually) good. Replaced Main Control Board, but still no lights or actions from buttons. Microswitches at latch both function with 110 volt reading when activated.

What next? Touchpad-Control Panel? Is there something else I can check before purchasing this?

Also, where can I download a diagnostics test manual as well as find wiring schematics?

touchpad ribbon is clean and the contacts are good.
door switch connectors back in the right spots and have correct current when activated.

voltage at the main board and harness leading out to drain pump and sump pump......I assume this should be 110v. Will have to trace wires to check voltage; however, pump and drain were not on at the time. Dishwasher was at end of cycle.

Your comment, "...rule of thumb when dealing with most main board and touchpad issues disconnect the touchpad ribbon and turn the power on if you hear the drain pump turn on then usually its the touchpad......if you don't hear the drain pump come on check for voltage at the drain pump...." since there is no lights on and no 'call' for pumping why would the pump be on, or off?

"...if you have voltage at the drain pump you may have brand new defective main board.' Hope not, but will check for voltage. Again, why would there be voltage going to the drain pump if there is no 'call' for draining. Washer was at end of cycle (off), ready to be activated for next washing.

Thanks

Tech sheet is usually under bottom panel or behind the main door panel.........When you kill the electricity on most unit and disconnect the ribbon most units will automatically go into a drain mode. Don't worry about the cycle it was in when it last was on unless it's on a dial type timer the unit will reset itself and try a different cycle when fixed and won't remain in the same cycle generally.