Vintage Synth Repair

Doesn't the JP8 use descrete circuity for the VCA/VCF ?


--- In vintagesynthrepair@yahoogroups.com, "Ricardo Verschut @ Jura 
Music Productions / The Engine Room" <juramp@...> wrote:
>
> Hi There,
> 
> It sounds like you have a voice failing. This might need some 
serious 
> measurement to understand what exactely is wrong. You should get 
yourself a 
> service manual to proceed with (conducted) measurements.
> 
> If you can't do this yourself you should probably take your JP8 to 
a repair 
> shop or a technician who has worked on JPs before.
> 
> I've had a similar problem on my unit a few years ago; it appeared 
that the 
> custom VCA-IC had reached the end of its lifetime... It wasn't easy 
to find 
> a spare IC.
> 
> Hopes this works out for you.
> 
> Cheers,
> RVe
> 
> 
> 
> "If Pac Man affected us as kids, we'd all run around in a darkened 
room, 
> munching pills and listening to repetitive music." - Kristian 
Wilson, 
> Nintendo, Inc, 1989.
> 
> 
> >From: "tim_at_jonas" <tim@...>
> >Reply-To: vintagesynthrepair@...m
> >To: vintagesynthrepair@yahoogroups.com
> >Subject: [vintagesynthrepair] Jupiter 8 Problem
> >Date: Mon, 13 Feb 2006 22:43:07 -0000
> >
> >On some patches, starting at the bottom of the keyboard, every 4th 
key
> >fails to sound for an octave or two.  On other patches, every 4th
> >white key fails to sound for an octave or two. Most patches are ok.
> >Ideas?
>