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Hum coming from Turntable

I need help in tracking a slight hum on my turntable.   I did narrow it down, and the cause of this would be my turntable.   Is this due:

1) cartridge not grounded properly 
2) cartridge wires are loose
3) turntable grounding is bad 
4) phono cable not properly shielded

Can any members/technical person that work on turntable can help me out.  Much appreciated!
128x128zipost
rdk777's avatar
rdk777
578 posts
 
The Google Wifi was causing a hum for me.  Had to move it farther away from the turntable.

Broken ground inside tonearm was also a cause at one time.



holmz's avatar
holmz
2,328 posts
 
@zipost it has nothing to do with you household grounding.It is likely a magnetic field if it is 60 Hz.
But it could also be a ground loop.
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cleeds
6,016 posts
 
Has this hum always been present, or did it recently appear?
What are you using for a phono stage, and how did you establish that’s not the problem?
zipost's avatar
zipost OP
199 posts
 
Cleeds….just bought the TT recently, i had 3 phono stages to swap out to see if i can back track the problem, with the same results.  It’s for sure the noise is coming from the TT or phono cable. 
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cleeds
6,016 posts
 
Just how loud is the hum? How is your TT connected to the phono stage - balanced? Unbalanced? What cartridge are you using? Have you tried another?
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