[sdiy] FW: Noisy Power-One Power Supply

[Scott]

________________________________________
From: Scott 
Sent: Tuesday, June 19, 2007 9:18 AM
To: 'synth-diy at dropmix.xs4all.nl'
Subject: Noisy Power-One Power Supply

Hello,
I was on this list a couple of years ago w/ a different email account.  I finally got around to building a nice cabinet for my synth, and put a new power supply in it.  I had been using a power-one 15-.8, and the new one is a 15-3.
With the new supply, I get a loud hum in everything.  The filters pick it up, and I can filter the hum.  It sounds like a nice sine wave.  I thought it was bleed-through from one of my OSC's, so I disconnected everything except for one filter, and I still pick up the sound.

The supply is wired properly, w/ both positives connected, both negatives connected, and all three neutrals connected.  I plugged in the small 15-.8 and the noise was gone.

Does anyone have any ideas of what I could check for on the supply or anything?

thanks 
(sorry if you get this a few times, Im having trouble getting messages to post to the list.  I just changed the registered email account, so will see if this helps)