Product review (5 stars): Boom.  Fixed in under 5 minutes!
I saw this same unit for $120+ at other merchants.  Was a little worried that this might be a weak knockoff, but nope.  It took two minutes to take the screws out of the dishwasher door, about 12 seconds to disconnect the old controller and plug in this replacement, and then another two minutes to put the screws back.  Bang.  Now it works!