How many people are having problems with their Radion Generation 4/5/6 Power Supply units? You may experience your light flicking on and off mostly. I have 3 out of 12 that have the same problem. I narrowed the problem down to a faulty power supply. Then, when I looked at replacing them, the price for a new one was too expensive from EcoTech Marine. Also, these power supply units were not subject to any extreme conditions; or, have fallen into the water. So, I feel like maybe EcoTech should replace them or something very amicable.