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fixing hum on Rega Rp6

Hi all-
LIke some other Rega owners, I experience a moderate hum that seems to have something to do with lack of grounding from the power supply.  I went ahead and ordered an upgraded power supply from Swagman Labs, which should take care of the hum and have other sonic benefits.
http://www.swagmanlab.com/Product_PSU?product_id=664

It will be a few weeks before that arrives.  In the immediate, I found this fix for running a ground wire from the existing Rega PSU TT.
http://www.audioappraisal.com/tip-ground-your-rega-ttpsu-to-reduce-hum/
I haven't done this yet, but my dad (an engineer!) is very excited to try this experiment over Christmas.  So my question is once I have the Swagman unit do I need to unhook this grounding wire, or is it likely to add value even with the Swagman?
Finally, will an upgraded power cord with the Swagman also be a worthwhile investment?
Thanks and happy holidays!
Margot
mcanaday
mcanaday OP
169 posts
 
No change when I touch the tone arm.  I notice it when I turn on the PSU TT...

Thanks!
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ct0517's avatar
ct0517
2,041 posts
 

I think the hum is from the wall wort for the Rega PSU...



mcanaday

Your PSU may be reacting to something on the same circuit.
Get an extension cord and have it go to another room not on the same circuit as the one currently. Plug your PSU into the extension cord.
is the hum still there ? .
mcanaday OP
169 posts
 
I did watch the video and that is my plan!  Thanks.  

Also - for now- the hum is gone.  I moved cords around so maybe I was just getting some interference...

But I think I’ll ground the PSU just to be sure.

Thanks for all your suggestions!
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