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Slight hum from SLI-80 power amp

I own an SLI-80 Amp for a little over a year.  My system has developed a very low, slight hum only on the right channel. One has to get right up to the speaker to hear this hum, but it is still a hum that should not be there.
Any ideas where I should start looking to eliminate this hum?  Thanks
128x128richfrank
richfrank's avatar
richfrank OP
34 posts
 
JTCF: Have not swapped the speaker cables. This sound system has been working like this for over 1 year.  Why now this?  Your suggestion to remove all external connections like the sub-woofer and CD is a great idea. Your last sentence is very important. Thanks. I will try......

CDC2: I was told not to use a "cheater" to eliminate a possible ground loop,  but your suggestion (or should I say Kara Chaffee) sounds logical.
The sub-woofer is on another outlet since installation days over 1 year ago, but ......  I will follow your suggestion and advise......
jtcf's avatar
jtcf
1,617 posts
 
Some people are able to solve a ground loop problem by lifting all of the grounds with cheater plugs except for one.IN THEORY everything is hooked together with only a single ground and you should be safe from being electrocuted in case of a short...makes me nervous.Get a professional opinion first.Please!
testpilot
922 posts
 
Cheater plugs should only be used as a diagnostic tool, they are not meant to be a remedy. Please remember that Cary has a 3-year warranty if you need a tech to look at it.
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