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Doepfer

Index last updated: 2026-04-29 00:15 UTC

Message

Re: A-126 malfunctioning...

2008-07-02 by astroschnautzer

--- In Doepfer_a100@yahoogroups.com, <hardware@...> wrote:
>
> > actually I got it to work too but it has a quirk; it doesn`t work
> > if  you power it up with the
> > shift knob at zero, but if you power it with the knob anywhere
> > else it works....
> 
> That's what I already mentioned in my message from June 26:
> 
> "We discovered that the internal quadrature VCO of some A-126 does not start
> now and then if the corresponding control is in the fully CCM position
> during power on (i.e. lowest shifting frequency ~ 50Hz). But it should start
> as soon as the
> frequency control is turned clockwise. We believe that it has to do with the
> power on details, i.e. how fast and in which sequence the +12V and -12V turn
> on which in turn has to do which power supply is used and which modules are
> installed."
> 
> Best wishes
> Dieter Doepfer
>

Yes, on base of this comment I figured it out, I just did not first understand that you have 
to turn off the device to get this working. Thanks for the help!

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