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Ground Loop Video and advice.

http://s1343.photobucket.com/user/fkmc123/media/IMG_1696_zps39c20b57.mp4.html

Any idea why this would be happening and a solution to fix? The two interconnects are L/R RCA's coming from my receiver to a Preamp. The power cable is from the preamp to a Richard Grey 1200C. Any time the power cable is not touching the two RCA's there is a ground loop. Or if I touch the RCA's the loop stops but not all the time. I've tried lifting the Preamp, with no change.

Thanks to anyone who can help.
128x128767400
767400's avatar
767400 OP
11 posts
 
Well when I previewed prior to posting I could see the video. Sorry, I'm new here and can't figure this out.
767400's avatar
767400 OP
11 posts
 
OK, try number two.

https://www.youtube.com/watch?v=d2XG_6L377g
jea48
4,423 posts
 
A broken, open, signal ground return connection on an IC would be my first guess. Can you check the ends on the ics?
767400's avatar
767400 OP
11 posts
 
I'll start swapping one out at a time and see what happens.

Thank you.
767400's avatar
767400 OP
11 posts
 
Solved! The "R" AUX RCA input jack on my C-2200 is bad. The short is inside the barrel somewhere.

Now the next question. Does anyone have a good repair place for McIntosh's, preferably in the South East?

Thanks.
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