Discussion about the Korg PolySix synthesizer

That is an awesome find. After all these years working with the clone boards and problems with C22, nobody noticed that C22 is missing a trace. Are you listening Jed/Andy? This one needs to get in the bug list. Great work there, jw.


From: mailto:PolySix@yahoogroups.com 
Sent: Sunday, February 7, 2016 6:19 PM
To: PolySix@yahoogroups.com 
Subject: Re: [PolySix] Jorgensen KLM367 Bug Alert - C22

  
I just checked my board. The gnd end of C22 does not connect to gnd.
Good job finding that! But my P6 works OK as is. Do I dare fix it...

Bob

--------------------------------------------
On Sun, 2/7/16, jw_dewdney@yahoo.com [PolySix] <PolySix@yahoogroups.com> wrote:

Subject: [PolySix] Jorgensen KLM367 Bug Alert - C22
To: PolySix@yahoogroups.com
Date: Sunday, February 7, 2016, 5:41 PM


I'm not sure about the boards you guys got -
but in MINE (there don't seem to be revision numbers)
C22 isn't even in the circuit. In the original, C22 hits
the same ground trace on the same side as the leg of C23. It
seems to be exactly the same kind of error that the other
two resistors has - as mentioned in Jed's bugs/errors
page.

now - i'm kind of
wondering if this has something to do with the
'instability' noticed by some using 22pf cap??

I can't believe
nobody's spotted this.... or maybe I just never got the
memo?




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Posted by: Bob Grieb <bobgrieb@yahoo.com> 
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