Vintage Synth Repair

It mat be that the ground or even the hot conncetion has broken off 
at the VCF outpout or one of the main outputs.  The power supply 
should be +15v on the red wire and -15v on the purple wire with black 
being ground.
JohnK

--- In vintagesynthrepair@yahoogroups.com, "John Brewer" <john@...> 
wrote:
>
> I don't think so but you need to get rid of the hum before you can 
really
> hear what else is happening.  Temporarily disconnect the earth from 
the
> mains plug feeding the ARP then, if that does not improve the hum, 
reconnect
> it and remove the earth wire from the plug feeding the mixer.  Note 
any
> changes in the volume of the hum.  Have you tried the phones 
straight into
> the ARP.
> JohnB
> ----- Original Message -----
> From: "mcharrigan" <mcharrigan@...>
> To: <vintagesynthrepair@yahoogroups.com>
> Sent: Sunday, October 15, 2006 1:48 AM
> Subject: [vintagesynthrepair] Re: My new Odyssey Doesn't Work
> 
> 
> > My set is very simple, just the ARP and a mixer with headphones, 
both
> connected to the
> > same power socket, both earthed. Silly question, but would an 
earth loop
> stop the VCF
> > from working?
> >
> > --- In vintagesynthrepair@yahoogroups.com, "John Brewer" <john@> 
wrote:
> > >
>