i tried this but it doesnt help here, when the 126 is not working there
seems to be no way to change this for the day. on next power up or some days
later its sometimes back to normal for a while.




2008/6/27 < hardware@... >:

> > yes , actually 5 minutes after posting the previous post the
> > a-126 was dead again, and today it works again, better than not
> > working at all.
>
> Totally strange. But I have one last idea. 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. In any case the VCO does not start if the frequency is less than
> ~ 50Hz (e.g. if the frequency offset trimming potentiometer has been
> changed
> by the customer to obtain a lower shifting frequency than 50 Hz).
>
> Best wishes
> Dieter Doepfer
>
>
>

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