Hum when cablevision is plugged in to tv

The cable isolator is the same thing as a ground loop interrupter, which Radio Shack sells for around $10 or less. I installed one on my son's TV cable and it did the job just fine.

This is a common problem. You have a ground loop caused by your cable connection. You need to isolate The cable from your system. Audio Advisor caries a product from Mondial called the Magic Block. AT $99 it is expensive, but it works.

Enjoy,

TIC

I heard that you might need to check to see if your Cable connection Outside your house is properly grounded.

I called the cable company they are going to come out on the 3rd, hopefully they can ground it better or I will try some of your suggestions. Thanks very much Agon members for your help.

This question has come up numerous times. Here is a copy of my solution which I have posted before:

I had this same problem. Here are the two parts you need, total cost $11:

http://www.radioshack.com/product/index.jsp?productId=2103063&cp=&kw=300+ohm&kwCatId=2032057&parentPage=search

http://www.radioshack.com/product/index.jsp?productId=2062059&cp=&pg=1&kw=ohm&kwCatId=2032057&parentPage=search

Connect the cable coax wire to the transformer/splitter.
Connect the wires from the transformer/splitter to the 75-ohm coax combiner/splitter.
Connect the 75-ohm coax combiner/spltter to the input on your TV.
This was done for me by the cable TV guy. Worked like a charm. Why? I don't know. I guess it breaks the ground loop.