Ok, so my friends house has some fluorescent light (tube style) in the kitchen. I only know it has 2 tubes and is controlled by a dimmer switch. The problem is that, the light output is dim and flashing/flickering. I know how a normal fluorescent circuit works, but I am not familiar with the ones that have a dimmer switch attached. What could be wrong here? Ballast? (Does it have one)? Tube? (I don't think both will go out at the same time right? Or maybe I should ask my friends if both went out together or one by one) Dimmer switch? Something else?