Anything can be repaired, depends how much you are willing to pay. Board itself may not be repairable in some cases but a new board will repair the dishwasher. Cost would depend on where you live and how much your local repair service centre charges. Phone around and ask for an estimate of cost.
Lincoln Appliance NZ
April 2012
Automatic Answer
While you wait for answers, we may have found some information which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix dishwashers.