Vintage Synth Repair

Don't know if you already have it but the schematics should help :

http://www.tcapp.com/pub/synths/oberheim_heaven/matrix6/docs/

(quite bad quality, but you can actually read things like "TL082" etc ;)


> > Thanks,
> >
> > Well, I found that it is not the opamp. Actually, aside from the
> > 4053, there's also an IC tagged "C741C" in at the same circuit -
> > would that one be hard to find ? any equivalents ?
> >
> >
> >
> >
> > --- In vintagesynthrepair@yahoogroups.com, no.freq@... wrote:
> > >
> > > Hi,
> > >
> > > You'd better use a TL082 instead of the 072. You'll usually find
> > that the right
> > > replacement op amps will end with the same numbers.
> > >
> > > Concerning the 4053, I bet it's a CD4053, so you may not have any
> > problems in
> > > finding one.
> > >
> > > And one last good thing, while you're at desoldering chips: use
> > (golden) sockets
> > > !
> > >
> > > Cheers,
> > >
> > > Michel
> > >
> > > > Hi all,
> > > >
> > > > I'm trying to fix my OB Matrix6R, on which the left channel
> > doesn't
> > > > play. The last stage is a NEC C4082C dual opamp (datasheet
> > attached to
> > > > Files section).
> > > >
> > > > I wonder whether it is possible to replace it with a 4558 or a
> > TL072
> > > > opamp, safely ?
> > > >
> > > > There is also one 4053 that I suspect. In case I need to replace
> > it,
> > > > what could be a good substitue for it in case it can't be found ?
> > > >
> > > > Thanks for any advice.
> > > >
> > > >
> > > >
> > > >
> > >
> >
> >
> >
>
>
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