Hum Problem

I have a 6.1 high end HT system. I am getting a hum through the Side Surrounds only. When I disconnect the incoming TV cable the hum disappears, what can I do to eliminate my hum. Your help will be greatly appreciated. Thank you. Rick
Try a $40.00 product call M.A.G.I.C.! This is a device that goes between your cable line and the TV. It helped eliminate the hum in my system! Most audio store carries it.