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All of a sudden getting a hum in my system?

I am getting a hum that gets louder as you turn up the volume. I disconnected my VPI Classic One turntable and I am still getting the hum.I disconnected my three month old Manley Chinook and hooked up my old Belles 20A phono pre-amp and there is no hum. So the Manley Chinook seems to be the culprit. I called Manley Labs yesterday but they are closed until January 2.Any suggestions for resolving this problem would be greatly appreciated.
montgomery
kcpo
2 posts
 
Do you have cable television plugged into your system? I had some hum going on, and when I unplugged the cable, it disappeared. I then added an inline ground to the cable coax, and it made it go away.
montgomery OP
29 posts
 
Thanks for the responses.Everything seems to be grounded properly. I have not moved anything or plugged something into another circuit. My home theater system is in another room and I do not have cable. I am taking the Chinook to a friends today to see if it hums when connected to another system.I will talk to a Manley Labs tech before experimenting with cheater plugs or RCA shorting plugs.
montgomery OP
29 posts
 
Just connected the Chinook to a friends system and the hum is still there getting louder as you turn up the volume.I guess the only thing to do now is to call Manley Labs and see what they suggest.
jmcgrogan2's avatar
jmcgrogan2
6,346 posts
 
Have you tried changing tubes?
montgomery OP
29 posts
 
I have not tried changing tubes.I will talk to a Manley Labs tech about changing tubes. I am new to tube equipment so I don't have any extras lying around.
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