[sdiy] MonoPoly SSM2033 Insanity

[Neil Johnson]

It seems this discussion is also taking place on muffwiggler:

https://www.muffwiggler.com/forum/viewtopic.php?f=17&t=228078

Neil

On Mon, 24 Feb 2020 at 04:35, mark verbos <markverbos at gmail.com> wrote:

> Are your power rails at the correct voltage? It seems odd that all 4 VCOs
> would be way out of range and by the same amount.
>
>
>
> Mark
>
>
>
>
>
> On Feb 23, 2020, at 11:21 PM, Randel Osborne <
> randel at redshift-consulting.com> wrote:
>
> Hello-
>
> I have a MonoPoly on the repair bench that has me baffled.
>
> All oscillators output the appropriate waveforms, but at 32KHz, and don’t
> keyboard track.
>
> All CVs leading to the 2033 are as expected.
>
> Pin 5 of the SSM2033 is CV in, as per the spec sheet.
>
> Pin 5 is not connected to the circuit board. There isn’t even a solder
> pad. This is the same for all 4 oscillators.
>
> Pin 5 is not connected to the CV on the schematics, although it comes
> really close, and looks like it should be.
>
> What am I missing?
>
> Does anyone have any experience with this beast?
>
> Thanks.
>
>
> -Randel
>
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