Help- 60 cycle Hum - ground loop problem

Help,

I have a ground loop problem creating a 60 cycle hum in my system. I have been using "cheater" plugs on my components which eliminated the problem, but this is not the best long term solution.

Just this morning I decided to disconnect my TV cable from the source (i.e. where it enters the house) as advised by some savy folks on this site....poof like a miracle the hum vanished!

My question is there any type of filter I can install on my TV cable to solve this problem? Other suggestions? Thanks!