Vintage Synth Repair

Had the same issue on mine (model 2800). Fixed by changing the LM301 (ref A1) on board C. Needs recaping however (luckily far less tants in an Odyssey compared to an Omni)..

--- In vintagesynthrepair@yahoogroups.com, Terje Winther <terje.winther@...> wrote:
>
> In my experience it is more likely that something in the VCA section  
> has failed.
> Quite often the CA3080 in the VCA fails.
> Second to that, caps fails. You could try to desolder caps in order to  
> isolate various parts of the signal chain that might short out the  
> signal.
> The clicking/thumping probably means that the envelopes are still  
> working.
> 
> Den 17. mai. 2012 kl. 04.40 skrev Alexis V. Rogers:
> 
> > I have an ARP Odyssey 2 that only outputs a faint clicking/thumping.  
> > The audio signals disappear across R1-R3 in the Audio Switcher/Mixer  
> > Section on Board C-II. I'm guessing the problem lies within the 4075  
> > submodule but I'm not sure how to proceed.
> >
> > Any thoughts?
> >
> > 
> 
> Terje Winther
> terje.winther@...
> http://www.wintherstormer.no/
>