Crumar Musical Instruments User Group.

Hi

So... Everything works fine apart from Envelopes;

the VCA envelope has problem with Decay - Decay does not work
the VCF envelope seems to be dead completely, none of the ADSR
controls work, neither does Depth knob. But the filter in itself works
and filters the sound nicely.

I opened up the synth and it looks neat - all bords ar in slots and
all ICs are in sockets. Could be easy to fix. But where should I look,
which IC should I replace?

thanks

Definitely reseat all the contacts on the boards.  Scrub with eraser
or like that and reinstall.  Hopefully it's just a bad i/c on one of
them.  Otherwise gotta bust out the manual and start following a
logical troubleshooting routine. -Bob
--- In crumar@yahoogroups.com, "polaranta" <fajnyadam@...> wrote:

>
> Hi
> 
> So... Everything works fine apart from Envelopes;
> 
> the VCA envelope has problem with Decay - Decay does not work
> the VCF envelope seems to be dead completely, none of the ADSR
> controls work, neither does Depth knob. But the filter in itself works
> and filters the sound nicely.
> 
> I opened up the synth and it looks neat - all bords ar in slots and
> all ICs are in sockets. Could be easy to fix. But where should I look,
> which IC should I replace?
> 
> thanks
>