[LAU] Multiple M-Audio Delta 1010s

Joe Hartley jh at brainiac.com
Wed Feb 13 12:45:28 EST 2008

On Wed, 13 Feb 2008 09:19:04 -0800
Kevin Cosgrove <kevinc at cosgroves.us> wrote:
> On 13 February 2008 at 7:47, Joe Hartley <jh at brainiac.com> wrote:
> > I have a second 1010 on the way to me now.  If it's repairable (I think
> > it's just a cap replacement, which I've done successfully before), I'll be
> > doing a big writeup on running 2 1010s in a similar system.  Stay tuned.
> Could you share with us the symptom and specifics of the solution 
> involving replacing a cap?  I'm wondering if the noisy channels 
> problem mentioned here a couple of times is related somehow.

Heh - I just Googled to see if I could find a good link to describe
the process and the first link I come up with is a post of mine to the
Planet CCRMA list about the problem!

My symptom was a horrendous buzz on all 8 output channels.  When I took
apart the breakout box, I saw a quadrupling circuit on the left hand side
of the bottom board (toward the front of the case, underneath the small
board that's on top) that had a couple of oozing caps.

I replaced them with 2200uF 35v caps from DigiKey:

If you've ever done electronic soldering before, it's a trivial procedure:
remove the 2 small 2200uF 25v caps and squeeze the larger caps in there.
The 35v caps are recommended, it was the underspec'ing of the caps that was
causing the problems in the first place.

       Joe Hartley - UNIX/network Consultant - jh at brainiac.com
Without deviation from the norm, "progress" is not possible. - FZappa

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