Thanks Dieter.
I already replaced the socket.

--- In Doepfer_a100@yahoogroups.com , <yahoo@...> wrote:
>
> The internal oscillator is fed via the switching contact of the Ext.CLK
> socket. If the switching contact of this socket is worn out is does no
> longer make contact. Maybe this is the reason. Try an external oscillator
> connected to the Ext.CLK socket to find this out.
>
> Best wishes
> Dieter Doepfer
>
>
> > -----Ursprüngliche Nachricht-----
> > Von: Doepfer_a100@yahoogroups.com
> > [mailto: Doepfer_a100@yahoogroups.com ]Im Auftrag von Tommy DOG
> > Gesendet: Sonntag, 8. März 2009 13:34
> > An: Doepfer_a100@yahoogroups.com
> > Betreff: 1 Doepfer A-117 trouble
> >
> >
> > Symptoms: DNG RND CLC outputs a thin oscillator sound without the
> > digital noise present. other outputs are fine.
> >
> > It sounds to me as if there is an oscillator that drives the
> > digital sound source and only the driver is functioning.
> >
> > In this picture:
> > http://3.bp.blogspot.com/_d9uh_FFQZoQ/SW_321zu3zI/AAAAAAAAAFM/vAu-
> > C9ki aw4/s1600-h/a117m.jpg
> >
> > If I make this simple connection the unit sounds good when
> > something is patched into the ext. Clk input AND can be tuned.
> >
> > I spotted following chips:
> > cd40106b
> > cd4006
> > cd4070
> >
> > Please let me know what the others 2 are and if these are correct.
> >
> >
> > Thank you.
> >
> > +++++++++++++++++++++++++
> >
> > I thought I posted this yesterday but it didn't appear in the
> > archive. My apologizes if anyone receives this twice.
> >
> >
> >
> > ------------------------------------
> >
> > Yahoo! Groups Links
> >
> >
> >
>