someone should design and bulid a new and improved PC board for Dolphin Pool Cleaners

I own two dolphin advantage cleaners and one of them is just like everybody else: moves two feet and shuts down. I got a idea before i crack it open, i will buy a used dolphin off e bay. At first it ran good and then it just quit dead i cracked it and found the machine had been jury rigged to work for a while and then caught fire. The driver board just melted down. i gave a lot of money for junk. Why can't someone start making better boards or at least a good blue print we could build our own. u would make some money !