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 1 response by rdk777

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.