I had the same problem as others here: green pool, no power light or power light on but very low voltage, replaced fuse, etc. Nothing helped. I did as ykcpeggy suggested and purchased two resistors from DigiKey. They came in a couple of days. My old resistor did not look bad until I unsoldered it and turned it over. Big crack down the back of it. I am no electronic repairman, but I unsoldered the old resistor, soldered in a new one, and my AquaRite is generating again! Amazon has an entire board for about $250 and my pool company wanted $683 (!) to replace the entire board and display unit and wall box! Thanks to all for sharing.