So, I opened my pool today and was trying to get my Jandy PDA to just kept saying "waiting". I figured it may be a problem with the RF channel it was set to. In any event, I opened the J-box, and a bunch of water came out. We had lots of windblown rain over the winter and I guess the rubber gasket must have dried out just enough to make it susceptible to getting water in it. I can see on the bottom of the board that the screws are slightly corroded. So, my guess it that it's fried and my only option is to replace it. My PDA says HANDHELD 3.0 when I turn it on, so do I need to replace the J-box with a 3.0 model. Any other suggestions?