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That dreaded hum

Hello all, I hope I'm in the right place and my question is what can I do to get rid of a ground loop hum in my rig. The particulars: I have my audio and video hooked together and when I want to watch dvds I have to disconnect my cable from the wall to eliminate the hum. I know Mondial used to make a box for this problem but that was many moons ago. I thank you in advance and happy Memorial day.
south43
spacekadet
63 posts
 

South,

Richard Gray's Power Company makes products just for that purpose. Take a look at their Pig Pole especially.

www.richardgrayspowercompany.com
wccoe
75 posts
 
http://www.hometech.com/video/atten.html#dc
stuartbranson
183 posts
 
You can still buy the Mondial at "Music Direct" for $99 but there are lots of examples of these isolators. This is the cheapest I've seen:

http://www.partsexpress.com/pe/showdetl.cfm?&DID=7&Partnumber=180-075
tomcanale
9 posts
 
Cheap fix is to go to Radioshack pick up a 75 Ohm to 300 Ohm adapter,and a 300 ohm to 75 ohm adapter ,connect them together
& hook it up to your incoming cable before your components,this will eliminate your hum & should cost about $11.00.
kotta's avatar
kotta
649 posts
 
I had the same problem. This was my solution. Went to Radio Shack and bought a small plastic box, 2 switches, 4 RCA jacks and frabricated a switch box. Toggle switches turn audio signal off/on from TV's audio "Output" jacks. Needed one extra set of interconnects. Works perfectly. The reason I did it this way was because my cable reception is excellent and I didn't want to take any chances messing up the video signal.
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