Ground loop hum

No cable box. I dont think it’s the room as there was no hum when I had my NAD amp running the system. Only started w the new equipment. I’ll try the cheater. 

Only Jim’s when preamp is set to the turntable.  O other inputs hum. 

Mike

see where?? Nothing attached. 

Only hums. Not Jim’s 

So a ground loop hum must be heard no matter which source is playing thru the preamp? Is that correct? I have a  Musical Surroundings Phonominal II+  phono preamp. 

Yoyoyaya please see my last.   The phono pre is not grounded. I’ll try that.  Thanks!!

Yoyoyaya

just tried grounding phono preamp to rogue preamp’s cabinet. No luck.  The 60hz noise goes up and down with volume knob.  Can hardly hear it at low levels.  All are plugged int a surge-X surge protector.  But once again, had no problem with former NAD amp.  Appreciate your suggestions. 

Everything is plugged into one outlet via a surge-x surge protector

Using MC cartridge

Same cart as with the NAD AMP

Something to report. I unplug my phonograph power plug and the hum is still there. What’s that mean. Will move phono to line 3 to see. It’s presently on line 2 and cd is on line 3. Too much fun. 

Jea48

you hit the nail on the head.  Problem resolved with my moving the phono preamp away from the Rogue CB preamp. I had it sitting on top of the Rogue.  You can hear it getting  softer and louder as you move them farther apart and the closer together again.  Thank you all for your insights and thoughts about this problem. As in real estate, location, location, location.  My best to you all. Jerry(kavakat1) 

I guess I should post it. Soon I will. It all fits in a front hall closet with records, except the speakers

Thank you all. This vm problem is resolved no need for further responses.