Discussion about the Korg PolySix synthesizer group photo

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Discussion about the Korg PolySix synthesizer

Index last updated: 2026-04-28 23:40 UTC

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Re: [PolySix] Re: Non-working attenuator

2015-01-02 by tuk88@rocketmail.com

I've got 3.35 V on pin 2 and 5V on pin 3. Normally, that works fine. But at the output, 0V. So I think that the LM393 is brown.

Howether, I'm looking for this strange voltage on the input 2 of IC5. I think there is a mistake on the Clone PCB. Because the voltage divider looks like to works fine.

I will contact the PCB maker to have the layout picture to check where the trouble come from.

I'll keep you in touch

Lucas

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