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

Showing 2 responses by cleeds

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?
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?