Loud hum in one channel


I just finished setting up an Empire 598 III turntable, and, unfortunately, am getting a fairly loud hum out of the left channel, which will happen on the right when I switch the leads. I am using a Sumiko Blue Point, and the ground wire is connected. Any help on solving this would be greatly appreciated!
hurricane

Showing 3 responses by puerto

Do you get the same hum when operating another piece of equipment like a transport? If so, it may be your processor. I had the same problem and it turned out to be a grounding issue. I had to plug the left channel mono amp into a three to two plug converter, then into the dedicated PS Audio receptacle. Problem solved. Just food for thought. If I switched IC cables the hum came through the other channel so it became obvious that the problem was with the processor, not the transport or mono amp. At least that was my experience. Maybe it is helpful.
Hurricane: You indicated that the noise is present even when the TT is off with just the ground wire attached (not the ICs). When you hear that hum is the preamp set to TT? What if the preamp is set on "CD" for example. With the TT off and the CD off - do you still hear the hum? What if you disconnect the ground wire as well when the TT is off - still got the hum? I'm still a bit suspicious of a grounding issue in your pre amp.
Sure sounds like the phono amp in the pre-amp is indeed the culprit. That would need to be checked out by a professional but I would sure start with that. If it was the pre amp itself you would probably be getting hum/noise out of any setting (CD, AUX, etc.). Let us know. Hope it isn't too expensive!!!