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Doepfer

Index last updated: 2026-04-29 00:15 UTC

Message

Re: problems with A-143-2

2008-05-23 by helitr0n

its the EG#3, and the malfunction is also outside of the case. however
i will exchange the pot to see if that helps - since warranty time is
over. thanks !

--- In Doepfer_a100@yahoogroups.com, <hardware@...> wrote:
>
> > hi all,
> >
> > one of the four EGs is not working properly:
> > when the sustain = 0, the output is high, without beeing triggered.
> > however, when a trigger/gate is applied, the envelope stops for the
> > duration of the signal, and then it goes high again.
> > with sustain >3, the envelopetriggering behaves normally, but the
> > output is too low compared to the other EGs on the module.
> > additionally, decay and relese also affect the triggering behaviour.
> >
> > acually, i like this - makes nice envelopes, but still id like to know
> > where the problem may be.
> >
> > thanks for any help.
> 
> If it's EG #4 (the lowest one) it may be a mechanical problem (short
circuit
> anywhere between the lower pc board and the metal frame). You could
solve it
> with adding any isolation material (e.g. self-adhesive tape) to the
metal
> part of the frame. Otherwise the EG in question is defective and has
to be
> repaired (probably a defective rotary potentiometer). In this case
please
> return the module to the representative or dealer where you
purchased the
> module. If it's still within the warranty period the repair is free.
> 
> Best wishes
> Dieter Doepfer
>

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