Doepfer

No, I bought it used.  I tried Dieter's suggestion and swapped ICs and it was a CA3080E.  I've ordered a replacement IC so it should work out OK.


--- In Doepfer_a100@yahoogroups.com, achtung_999 <heinrich.himmelwasser@...> wrote:
>
> I had the same problem recently when I ordered one from Thomann.
> I send it back and they send me a new one having the same problem.
> I ended up buying some new ICs myself and solved the problem that way.
> 
> I'm curious if you ordered it a thomann as well..
> 
> greetings,
> 
> Ernst
> 
> 
> On Thu, Mar 26, 2009 at 11:42 AM, madapples1 <rusty0306@...> wrote:
> > yes, I understand it can be difficult to trouble shoot like this. Thanks for
> > the reply.
> >
> > I thought about swapping the ICs to see if it follows one but wanted to ask
> > first. I will try that.
> >
> > Thanks again.
> >
> > --- In Doepfer_a100@yahoogroups.com, <yahoo@> wrote:
> >>
> >> > I did a search of the database and didn't see anything describing this.
> >> >
> >> > I just got a used a-132 dual voltage controlled amplifier. The
> >> > upper VCA is functioning properly. The lower VCA is not working
> >> > properly. It has a very low output and "thumps" or "pops" when
> >> > it opens/closes no matter what signal I use to open it. There's
> >> > a very large difference in the upper and lower channels.
> >> >
> >> > I was passing audio through it and opening it with an LFO. The
> >> > upper channel behaves as expected but the lower does not with the
> >> > same signals.
> >> >
> >> > I also have another A-132 and both channels function very similar
> >> > and are similar to the upper channel on the problematic module.
> >> >
> >> > Anyone have any ideas where to look for the problem?
> >>
> >> From the distance it's difficult to find out what's wrong. If you are
> >> experienced with electronics you could swap the integrated circuits of the
> >> upper and lower section to find out if one of the integrated circuits is
> >> defective. Maybe the module has to be readjusted (nothing but minimizing
> >> the
> >> "plop" input connected to GND and e.g. an ADSR as CV).
> >>
> >> Best wishes
> >> Dieter Doepfer
> >>
> >
> >
>