Where is the balaster on a projector? What does it look like?

I just put a new lamp in my projector and it will still not light up, even though it does power on. I was told the balaster and color wheel go out often in these lcd projectors. I don't see any information on the balaster, what it looks like and the complexity of a repair.

My projector powers on, light turns green on power then after a minute the light indicator for the lamp turns red and the power indicator starts flashing red. (Maybe I was sold a dud bulb..) Any feedback would be appreciated.