Doepfer

Hi there,
I just got a A-188 4096.  It delays really well and seems to do everything it should except 
when i apply a cv to the cv1 or cv2 inputs regardless of the position of the polarity switches 
there appears to be no change in the delay time.  All other sockets on the module seem to 
function as expected.  Am I missing something here or is my module faulty?  I've tried 
everything from a 0.5Hz sine wave to the output of a S/H but still nothing.  Any advice 
greatly appreciated.

hello,

to be honest, i think your module is faulty.
please check the sockets, maybe they don't make
good contact when a plug is inserted.
when the polarity switches are in middle position
then the signals presented to the corresponding jacks are
ignored, so another (rare) possibility could be that the
switches are not functioning.

best wishes

ingo




--- In Doepfer_a100@yahoogroups.com, "thighpaulsandraslingsby" 
<thighp@...> wrote:
>
> Hi there,
> I just got a A-188 4096.  It delays really well and seems to do 
everything it should except 
> when i apply a cv to the cv1 or cv2 inputs regardless of the 
position of the polarity switches 
> there appears to be no change in the delay time.  All other sockets 
on the module seem to 
> function as expected.  Am I missing something here or is my module 
faulty?  I've tried 
> everything from a 0.5Hz sine wave to the output of a S/H but still 
nothing.  Any advice 
> greatly appreciated.
>

thighpaulsandraslingsby wrote:

> Hi there,
> I just got a A-188 4096.  It delays really well and seems to do everything it should except 
> when i apply a cv to the cv1 or cv2 inputs regardless of the position of the polarity switches 
> there appears to be no change in the delay time.  All other sockets on the module seem to 
> function as expected.  Am I missing something here or is my module faulty?  I've tried 
> everything from a 0.5Hz sine wave to the output of a S/H but still nothing.  Any advice 
> greatly appreciated.

I don't own A188, but a wellknow "problem" of all kind of VC modules is: 
If you select the maximum value at the module it self (in the case of 
A-188 delay clock value to the 08:00 position), an additional control 
voltage will not change anything (expecting, that the extreme setting of 
the fixed value is equivalent with the maximum control voltage amount).

Florian

Dear members,

during the last two days a friend of mine began with the first shoots of a
documentary film about our company. He asked me to forward this information
to this group as he is looking for all kind of unusual pictures, videos or
sounds he could use in the movie. If you have any ideas or material you are
willing contribuite please contact him directly: Andreas Merz, email
address: weltklang2000@t-online.de. As far as I can see it will be not a
usual documentary film but a movie with some funny parts and artistic
elements. Andreas hopes to finish the movie within about one year.

Thank you.

Best wishes
Dieter Doepfer

> -----Ursprüngliche Nachricht-----
> Von: Doepfer_a100@yahoogroups.com
> [mailto:Doepfer_a100@yahoogroups.com]Im Auftrag von
> thighpaulsandraslingsby
> Gesendet: Freitag, 25. August 2006 01:33
> An: Doepfer_a100@yahoogroups.com
> Betreff: [Doepfer_a100] A-188 (4096) Problems
>
>
> Hi there,
> I just got a A-188 4096.  It delays really well and seems to do
> everything it should except
> when i apply a cv to the cv1 or cv2 inputs regardless of the
> position of the polarity switches
> there appears to be no change in the delay time.  All other
> sockets on the module seem to
> function as expected.  Am I missing something here or is my
> module faulty?  I've tried
> everything from a 0.5Hz sine wave to the output of a S/H but
> still nothing.  Any advice
> greatly appreciated.
>
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>
>
>
>

We had some A-188-1 for repair with a similar fault (not working sockets of
the small board). In all cases the reason were broken tracks near the jack
sockets of the smaller pc board (i.e. the board with the 4 switches). We
assume that the faults happened during transportation or module installation
if the pc board is bended too much (e.g. because of too strong
wrapping/pressure during the transportation or if the module is held with
the two pc boards only during installation into the frame). If you are
experienced with soldering I'd recommend to bride over the pcb tracks that
lead away from the jack sockets (e.g. by connecting a wire between the jack
socket pin and the pin of the next electronic part of the pcb track, usually
a resistor).

If you are not able to to this repair yourself please send the module to the
dealer/representative where you purchase the device.

For the new pc A-188-1 boards (from third series) we asked our manufacturer
to use a thicker cooper for the pc boards to avoid such problems.

Sorry for any troubles. Of course we try to avoid such problems but for new
modules they may appear only after some weeks or months.

Best wishes
Dieter Doepfer
Doepfer Musikelektronik GmbH
Email address: hardware@doepfer.de
Web Site: www.doepfer.com

> -----Ursprüngliche Nachricht-----
> Von: Doepfer_a100@yahoogroups.com
> [mailto:Doepfer_a100@yahoogroups.com]Im Auftrag von
> thighpaulsandraslingsby
> Gesendet: Freitag, 25. August 2006 01:33
> An: Doepfer_a100@yahoogroups.com
> Betreff: [Doepfer_a100] A-188 (4096) Problems
>
>
> Hi there,
> I just got a A-188 4096.  It delays really well and seems to do
> everything it should except
> when i apply a cv to the cv1 or cv2 inputs regardless of the
> position of the polarity switches
> there appears to be no change in the delay time.  All other
> sockets on the module seem to
> function as expected.  Am I missing something here or is my
> module faulty?  I've tried
> everything from a 0.5Hz sine wave to the output of a S/H but
> still nothing.  Any advice
> greatly appreciated.