Doepfer

Strange ! If you have a digital multimeter available I'd recommend to
measure the resistance between the contact of the first gate socket and the
contacts of the gate sockets #2, #3 and #4 (use the main contacts, not the
switching contacts, for details please refer to the A-100 DIY page). The
resistance has to be close to zero (the display should read less than ~ 1
Ohm). If this is OK apply a permanent gate signal (+5V or mroe) to the first
gate socket and measure the gate voltages at the gate sockets #2, #3 and #4
(again the main contacts, not the switchiong contacts).

Best wishes
Dieter Doepfer

> -----Ursprüngliche Nachricht-----
> Von: Doepfer_a100@yahoogroups.com
> [mailto:Doepfer_a100@yahoogroups.com]Im Auftrag von thomasborax
> Gesendet: Montag, 4. September 2006 04:46
> An: Doepfer_a100@yahoogroups.com
> Betreff: [Doepfer_a100] Re: a143-2 issue
>
>
> hello again-
> i looked at the module and noticed the jumpers you indicated.  the
> jumpers appear to me to be completely intact, connecting the circuit
> boards exactly as you indicate.  the solder points on the board look
> solid.
>
> any other possbilities?  as i said, each envelope works perfectly
> individually.
>
> ----tom
>
> --- In Doepfer_a100@yahoogroups.com, <hardware@...> wrote:
> >
> > Tom,
> >
> > maybe the normalling wire has been interrupted when you replaced the
> LEDs.
> > It's a blank wire going from the main contact of the first gate
> socket to
> > the switching contacts of the three remaining gate sockets (it leads
> from
> > JP2 of the first board to JP2 of the other three boards but
> crosswise: for
> > the upper board the solder point close to the printing "JP2" is
> used, for
> > the boards 2, 3 and 4 the solder points close to the front panel are
> used).
> >
> > btw. you cannot measure the gate signal at the gate sockets 2, 3 and
> 4 as
> > the normalling from gate #1 is interrupted as soon as a plug is inserted
> > into the corresponding gate socket 2,3 or 4!
> >
> > If a submodule is working as an LFO depends upon the settings of the
> > controls ! Not for all settings and patches an LFO is obtained. As an
> > example this patch/setting has to work as an LFO: EOD -> GATE IN,
> Attack =
> > 5, Decay = 5, Sustain = 0, Release = 5. Changing the time parameters
> (A/D/R)
> > will change the rise and fall time of the LFO.
> >
> > Best wishes
> > Dieter Doepfer
> >
> > > -----Ursprüngliche Nachricht-----
> > > Von: Doepfer_a100@yahoogroups.com
> > > [mailto:Doepfer_a100@yahoogroups.com]Im Auftrag von thomasborax
> > > Gesendet: Donnerstag, 31. August 2006 18:28
> > > An: Doepfer_a100@yahoogroups.com
> > > Betreff: [Doepfer_a100] a143-2 issue
> > >
> > >
> > > hi lads/lasses-
> > >
> > > i've been loving my a143-2 for quite some time.  i have encountered
> > > a bug in the normalization, and i wondered if anyone else had the
> > > issue, or had a fix.  i am happy to go into the ciruit itself and do
> > > a fix, if need be.
> > >
> > > here's the issue-  the gate of env 1 is no longer triggering the
> > > other 3 envs (there are no gate/trigger signals present at the g
> > > jacksof 2,3, and 4).
> > >
> > > this is a wonderful feature of this module.  i'd like to get her
> > > back to this.  incidentally, the gate jacks work on all the envs,
> > > just not the normalized gate input 1 controlling all others.  all
> > > the digital outs work etc.  everything works fine.
> > >
> > > actually, now that i think about it.  the module has been slightly
> > > buggy from the start.  occasionally in "lfo mode", with patch cables
> > > routing the digtal outs into the gate jack, nothing happens.
> > > usually it starts blinking away like an lfo, but occasionally
> > > nothing.
> > >
> > > also, a few months ago, i noticed env 4 just up and stopped running
> > > in tandem with the others, but worked individually.  then it jumped
> > > back up with the others.
> > >
> > > very odd.  the only mod i've done to this module is i soldered in
> > > different colored LEDs, just to make my system look more like a
> > > carnival ride.  i can't imagine how doing this could effect the
> > > operation, but i may be missing the picture.
> > >
> > > anybody?
> > >
> > > --------tom
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> > > Yahoo! Groups Links
> > >
> > >
> > >
> > >
> > >
> > >
> > >
> >
>
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