Thanks for the info
I believe the chips have been taken for use elsewhere. There are
switches missing which look like they have been taken to repair
something else, so I kind of think this may have been the case with
the chips. DOes anyone have a source for the CEM3394 ?
One other thing I`ve noticed is that there is an orange wire coming
from the PSU board on one corner. The other end has become
detached. Does anyone know where this should connect to ?
Steve, The diagrams would be useful. I`m based in the UK. I don`t
know if thats too far away.
thanks again
regards Rob
--- In Simmons_Drums@yahoogroups.com, <jesper@e...> wrote:
> Yes, either the chips were blown out of their sockets or someone de-
soldered
> them and earned big bucks on Ebay!
>
> electronically yours, jesper
> - -- --- ---- ----- ---- --- -- -
> www.electronic-obsession.se
>
>
> ----- Original Message -----
> From: "Steve Ridley" <spr@s...>
> To: <Simmons_Drums@yahoogroups.com>
> Sent: Tuesday, September 20, 2005 2:13 PM
> Subject: RE: [Simmons Drums] Re: sds9 info wanted
>
>
> >
> >> The chips that are missing are marked iC37 & IC38. Can anyone
verify
> >> that these are curtis chips & what the curtis part number is ?
> >
> > They're Curtis CEM3394s. There should be one for each tom. Does
one of
> > the
> > toms work? There is also a CEM3372, but that's a filter for the
snare.
> > CEM3394s are not easy to find. Paul "MOTM" Schreiber keeps most
Curtis
> > chips,
> > but he's out of 3394s. You should be able to get the data sheet
off his
> > site
> > though.
> >
> > Do you know why the 3394s were removed? Before you replace them,
check
> > the
> > power supply. Curtis chips are very vulnerable to excess
voltage. The
> > PSU should give +15v, +5v and -6.5v. I had a PSU go bad in an
SDS1000
> > (cut down SDS9 in a rack), and it took out the Curtis chips and a
random
> > selection of other devices. Sound familiar?
> >
> > I have schematics, but my scanner is dying. If you're not too
far away, I
> > might consider photocopying and posting them for you...
> >
> >
> > Steve
> >
> >
> >
> >
> >
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
> >