I have a dolphin pro which worked for just a month past warranty. I was told by the repair center that the motor was bad and they wanted 550. to fix it. I took it apart myself.. The motors are both good and work fine after testing. There was a small amount of water inside and the printed circuit board was wet. I dried it out with a heat gun. reassembled it and it worked fine for 1 day and not does not work again. Even if I were able to purchase the printed circuit it will probabley only work until water gets inside again. What a piece of trash. Maytronics should be put out of business for making such a piece of junk. I have a 15 year old polaris which still works fine. For the price of this thing which on;y lasted 3 years and used maybe 10 times each year I could have hired someone to clean my pool once a week....