Vintage Synth Repair

At 2:40 Uhr +0000 17.05.2012, Alexis V. Rogers wrote:
> 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.

You could try to run a wire across input and output of the filter module
(pin 1 and 10) to short it out temporarily. This will at least show if the
problem is with the filter or with the amp section.