The suspected fault found in that LED light bar. The two power supplies have failed - a 'blown' main smoothing capacitor and fuse on both of them. It's very likely that all the other light bar units the Drama dept. have, will soon suffer the same fault. As these power supplies aren't readily available, I've a few other possible options to get the light(s) working again, and at a very reasonable cost... considering that the lights are allegedly over a thousand pounds each.