Hum from Florescent light


I have a florescent that puts a nasty hum in my system. Its a light that plugs into the wall. Is there a cheap easy way to isolate this light?
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Thanks to all for the suggestions. I can see there are lots of people on this site smarter than I. Some of my interconnects have no shielding, so I cannot vary that. But, I did try reversing them. I have many interconnects, and have found the problem was only ameliorated(not completely) by a pair of Monster(I know, I know...) cables. And, I think that is because they are two meters. I can keep them away from the power cord. That's how I realized the others should be kept away from the cord. I have tried Coincident, AudioQuest, HomeGrown Audio(2 of them), Tara, Kimber(not sure why - same as HGA, maybe desperation), and Monster. I haven't heard any of the new Audioquest line, but they could be better in this area than their old line. I am not sure, thought they only changed surface quality of their metals, cosmetics, plugs, and PRICES. I would like to stick with the Coincident and Home Grown Audio if at all possible, as they do things I really love. Thought about the grounding connection on my integrated(not using a preamp these days) a long time ago. When I first started having these problems. I should do it right this time, last time I didn't give it much effort. I blamed the HGA products/RFI. RFI blockers helped, but now I realize my problem is AC. Will try the grounding suggestion. A thousand thank yous. Joe.
Thanks, Cornfed, I thought I might have heard that halogen lamps created problems, but I couldn't really remember. Some of them are so darn cute, I might have wasted some time trying one.
Sometimes fluorescent noises can be tamed using the Audio Prism wall-warts. Have seen this demo'd & it did work, but have never tried it personally.
Many thanks to all who responded and to Sugarbrie for going out of his way to get the info. It looks as if is safest to replace the light! Thanks again