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Vintage Synth Repair

Index last updated: 2026-04-28 23:41 UTC

Message

Re: ARP Odyssey 2800 oscillator problem.

2009-11-11 by Nicolas

Hi,

The trimmers are fine.
When I'm comparing the voltages beetwen VCO1 and VCO2, the pitch of VCO1 is shifting if I touch the grid of its JFET (Q6) with my voltmeter probe while there is no effect on VCO2 if I touch the grid of its JFET (Q13).


Nicolas

--- In vintagesynthrepair@yahoogroups.com, "Monie" <arp2600fan@...> wrote:
>
> Caveat: I am not a tech.
> But I can't help but ask--did you replace the trimmers as well?
>

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