Vintage Synth Repair

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@yahoogroups.com
>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?