Re: EDP Noise Problem (overheating?)

["wavecomputer360" <wavecomputer360@gmx.de>]

Did you just pull out the memory bars, or did you also replace the 
connector
strips for the SIMM bars? And how about that issue with 4mB SIMMs that have
more than eight chips on them producing extraneous noise or even heavily,
erm, "processed" loops? I have SIMMs with eight chips maximum on them.
Should I look out for other SIMMs to replace them with in order to improve
S/N ratio?

Stephen


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----- Original Message -----
From: "Tom Combs" <tcombs@sep.com>
To: <dylan@aops-eds.com>
Cc: <Loopers-Delight@loopers-delight.com>
Sent: Wednesday, January 19, 2005 2:26 PM
Subject: Re: EDP Noise Problem (overheating?)


> Dylan,
>
> A couple of days ago I finally got around to opening my EDP to reseat
> the memory sticks.  This seems to work wonders.  The EDP is currently on
> it's 3rd day of running a constant loop - no degredation that I can hear.
>
> If you try this, please post your results.
>
> Thanks,
> Tom
>
>
> Dylan Deanda wrote:
> > Hi Tom,
> >
> > I'm in the same boat as you.  After leaving a loop muted overnight, I
> > come back in the morning and it's degraded to hissy garble.
> >
> > I've pondered resetting my memory sticks, though I've never gotten
> > around to it to test the theory.
> >
> > I look forward to a fix.
> >
> > Best regards,
> >
> > Dylan DeAnda
> >
> >
> > -----Original Message-----
> > From: Tom Combs [mailto:tcombs@sep.com]
> > Sent: Tuesday, January 04, 2005 1:11 PM
> > To: loopers-delight@loopers-delight.com
> > Subject: EDP Noise Problem (overheating?)
> >
> > I have an Oberheim EDP (beige panel, maximum memory) has a noise 
>problem
> > and I'm wondering if it may have something to do with the voltage
> > regulator overheating issues I read about in the archives.
> >
> > Say I record a loop and I leave the unit running for a long time (a few
> > hours).  Eventually the loop will deteriorate, and any new overdubs I
> > apply at that point also come back immediately degredated.  It kind of
> > sounds as if the D/A becomes starved for voltage.  I have noticed that
> > my
> > unit gets pretty hot right around where I've read the voltage regulator
> > lives.
> >
> > I should add that turning the unit off for 5-10 seconds fixes the
> > problem.
> >
> > Another possible symptom is that I notice my loops contain an increased
> > level of hiss when compared with the input signal (I notice this
> > immediately after I hit record after recording a loop - it isn't due to
> > repeated overdubs).  The amount of hiss seems to vary at random.
> > Sometimes it's a little noticable but tolerable - other times it's
> > downright distracting.  I've read that these units are supposed to be
> > quiet and have some of the best audio performance specs of most of the
> > loopers that are out there.
> >
> > Thanks in advance,
> > Tom
> >
> >
>
> --
> Tom Combs, Senior Engineer
> SEP, Inc.
> 11611 N Meridian Street
> Suite 800
> Carmel, IN  46032
> (317) 843-1640
>