Recently, I purchased two T5 HO Nova reto-fit kits. They each have two 36" actinic bulbs. I'm putting them over my built in 180 so I just mounted them on a 2 x 4 to hang over the tank. After mounting the standoffs and endcaps, plugged in the bulbs and ballast, and there was a quick flash of blue from one bulb then...nothing!
No light, no buzzing sound, no nothing.