Hello All,

Basically I have my setup as this: The cable tv coax runs into my vcr, which runs into my amp via RCA cables. The problem is this: I get a very loud hum! Its terrible. Anyways, this only occurs when the cable TV is plugged into the vcr. If I disconnect TV, the VCR outputs no hum at all. I was wondering if I should short the cable tv earth or ground to the case of my amp, or if this isn't a good idea. Any help greatly appreciated.

Pete

Try this web site..
 

Go to:
http://www.smr-home-theatre.org/Ground-Loops/

Read the whole article.
It gives a good explaination of what causes hum. Look farther down and you'll see Cable TV recommendations etc.

There are small small isolation transformers available mounted on TV coax cable. Just to plug in between your VCR and incoming TV-cable. Works fine, I've got one myself. Buy from your nearest electronics supplier. Costed about 7 euro.

Just wanted to say thanks a lot for the replies. The information you've provided has been extremely useful... DIYAUDIO rocks!

Pete