I do not know of a fix/update for the problem you describe.

Is the unit on a separate line/circuit?
If not that may be causing your problem re: there are voltage spikes on the line and that is blowing the boards.
It is not uncommon for people to hook the unit up to the garbage disposal line ao another line that has appliances on it. This is not a good idea.

If a separate line cannot be run to the dishwasher I would try the following.
Add an electrical receptacle to the line.
Then install a line cord to the dishwasher instead of hard wiring it.
Make sure the line cord is 3 prong and it can take at least 15 amps.
Also get yourself a surge protector that also will handle 25 amps.
Plug the surge protector into the receptacle and then the dishwasher into the surge protector.

Recently bean counter types merged many white appliance manufacturers into one company. Then sold off many of the newer innovations. For examle, Maytag's Neptune was sold to S Koreans.

With Kitchen Aid, Maytag, Hotpoint, GE, and many other names now being designed by buseinss school graduates - not product people (ie engineers), white appliance quality has taken a sharp downturn. Better quality is now starting to come for S Korean manufacturers including LG and Samsung. Find latest issues of Consumer Reports for details - to discover which ones

Any controler damaged because it was on the same circuit as a garbage disposal or something else is defectively designed. Even protection already inside the controller should be superior to what any surge protector does. If building wireing does not have a fault (ie floating safety ground), then the controller board should suffer major anomalies and work just fine.

Electronics are not suspect. It is who has now designed the latest products. Once companies are dominated by finance types, quality diminishes many years later. The past ten years have seen those symptoms in the white appliance industry that was once so reliable.

Hello thank you to both of you for your excellent answers.

Yes, there was moisture in the control board. I was hoping to find some kind of fix. If the control board is not water proof I don't see what we can do.

We found out that in order for this dishwasher to be declared a lemon, the service calls have to be reported to Whirlpool.
We would not have known this as ours is a Kitchenaid DW

The store we purchased it from is denying knowledge of any problem. They do not want to hear it.

Your responses have been invaluable. We will be buying our future parts from you. I see that other customers are watching videos to see how to repair their own appliances. We will be forced to do that as well. Labor to replace the control board is $250.00; ridiculous when it only takes 4 minutes to replace.

Whirlpool et al should be embarrassed to have this awful product.

Thanks again, Dee

Thank you so very very much, I will get back to you to let you know what happens, if you don't mind.
We think we are in for many problems in the future.
My parents and I really appreciate your help very much.
This site is a godsend to us.
Bless you
Dee

I'm sorry about what happened to your dishwasher. I understand how frustrating this may be on your part, especially because it cost you a lot. In addition to that, you have to pay for replacement of parts. I will probably be as frustrated as you are if I experienced that too. Sadly, I have no idea as to how we resolve that concern. Using things signifies that they may eventually bust. When and if they bust, you should think about downgrading your appliances, rather than replacing them. Article resource: Don't replace, downgrade.