yeah like doco said just try the basics like tightening the screws up (if any). You dont really want to mess around with it too much so look at what kind of warranty it is covered by. Hopefully it has a warranty and they will just replace that. My ballast is built in to our 400W light and we only have a real low buzz. Your light shouldn't be that loud. Also, I am assuming it is not a digital ballast since there should be absolutely no way it would be making that much noise. In fact it wouldn't be making any noise. Hope you get that worked out.