Archive of the former Yahoo!Groups mailing list: Discussion about the Korg PolySix synthesizer

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Subject: Re: Polysix Issues with: VCA / Octave Switch / Program 1 LED

From: "Alexis V. Rogers" <alexis.v.rogers@gmail.com>
Date: 2011-02-02

There is 5V at IC35 pin 16. All of the connections check ok.

And, I do have access to a scope.

--- In PolySix@yahoogroups.com, klosmon <klosmon@...> wrote:
> It's conceivable that IC35 (CMOS 4042) is dead; is there 5V at pin 16?
> As long as you're checking continuity, look at the resistor network of
> R94 - 97 from the output pins; the junction of the four resistors
> should connect to pin 6 of CN03 to the effects board.
>
> Also, check the connections from the front panel: the rotary switch
> requires connections to P10, 11, 12 & 13, and D03.
>
> It's unfortunate you don't have access to a scope: while continuity
> checking is good, viewing the test points with a scope is a much faster
> way of determining what's working correctly & what isn't.
>
> ~G