radeon g6

One of my radion blues keeps shutting off. I switch the power cables and adapters but just no power to one of them for some reason. Both outlets, and both power bricks work, but the light just won’t go on and won’t connect to the app either. Wondering if anyone knows how to fix this ?

3- radion xr 30 g6 blue led light About 6 months old going to give the sky a try am a equipment junky nothing wrong with them I have all the original box that came with Will sell as a set and after payment is received I need about a week as my tank as lots of coral and can leave it with out...