Water in Maytronics Dolphin Motor Box

Had the same unit for 3 years and it suddenly stopped working. Tried calling Tech support and no one would talk to me. I tested the transformer and cord and they tested fine. I figured I might as well take the motor box apart since it was out of warranty. To my surprise there was 2 inches of water and dirt inside. I cleand it all up and tested the motors, which were still working. The motor board is another matter, I tried to clean it up but the unit will not run. I finally got to talk to a "tech" at Maytronics but it was a waste of time...I know more about the junk they sell than he did. I made numerous calls trying to purchase a motor board but they will not sell me one. I have to buy the entire motor box assembly. I've decided to cut my losses and buy a different brand and I will continue to bad mouth Maytronics as they have the worse customer service on the planet.