[Stu Pitt]

I know this was covered pretty recently, but I can't find it anywhere...

I have my TV connected from its RCA audio outs to my B60.  I hear a good amount of hum through the speakers when on this input, and a lower but still noticable amount through the other inputs (except the phono input).

Its not the TV or the interconnects - a new TV does the same thing and interconnects were swapped to confirm.  The hum hasn't increased or decreased.

The TV being on or off makes no difference.

I unplugged the cable from the TV and it was gone in every input.  I don't use a cable box with the TV in my listening room.

By process of elimination, I'm pretty confident the problem is the cable wire.

Now for the $64k question -
What can I do to get rid of the hum?  I don't have enough inputs on the B60 to directly connect everything I have going into the TV and my music sources and I can't use the optical out from the TV.  And I refuse to give the cable company another dime to 'rent' another cable box and remote.

[James Tanner]

About half way down the page:

http://www.jensen-transformers.com/iso_vid.html

Model VRD-1FF

Cable TV RF isolator

james

[ian.ameline]

Yep - A ground loop from the cable-TV connection is very common problem -- solved completely with a simple and inexpensive isolation transformer like the one James links to. You'll loose a couple of db on the cable video signal (a bit less than what you'd lose with a 2 way splitter), but otherwise no difference.

 

[Stu Pitt]

Thank you, gentlemen.

[John Casler]

Google for PICO MACOM TSI-2400 Coaxial Voltage Isolator 

Less expensive ($9.95) and as effective




This will work with CABLE ONLY , not DISH or DIRECT TV.