yes, try to check the jack from the back.
i have heard of one guy, who had a tiny bit
of dust in a jack, which caused funky things,
so check for that too, also on the pcb.

good luck :)

best wishes

ingo

--- In Doepfer_a100@yahoogroups.com , "skp_pete" <skp_pete@...> wrote:
>
>
> thanks for the help
>
> i bet youre right
>
> i'll double check the plug to the bus board ( cant imagine those plugs come loose )
>
> otherwise i can prob visually check the jack i guess from the back
>
> it was on all day today with no issues
>
>
> --- In Doepfer_a100@yahoogroups.com , "selfoscillate" <synaptic_music@> wrote:
> >
> >
> > the cv1 jack is normalled to the cv bus,
> > maybe there is something wrong with the
> > jack itself or with its bus connection
> >
> > best wishes
> >
> > ingo
> >
> >
> >
> > --- In Doepfer_a100@yahoogroups.com , "skp_pete" <skp_pete@> wrote:
> > >
> > > I've had my A-100 synth (started with basic system mini) since new only 5 months ago....
> > >
> > > Yesterday after switch on, one of my A-110 osc sounded like it had random voltages going on inside
> > > It sounded really sick in the guts
> > >
> > > no patch leads apart from the osc output so was definately something not right....
> > >
> > > my other A-110 was and is fine.
> > >
> > > after fraking out for a coupla minutes, i plugged a lead into CV1, and everything's fine. Take the lead out and everything is fine.
> > >
> > > The same thing happened again today about 1-2 hours after start up.
> > >
> > > the osc goes all sick sounding ..... i plug an unconnected lead into CV1 breifly and everything is fine for the rest of the day (another 8 hours)
> > >
> > > what gives
> > >
> > > any help or experience
> > >
> > > thanks
> > >
> >
>