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Discussion about the Korg PolySix synthesizer

Archive for polysix.

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Re: [PolySix] P6 MG Oddity

2018-03-01 by Florian Anwander

Hello Jim I had a similar issue at my P6, and in the end replacing the LM339 (IC3) solved the issue. But there are other potential causes for failure involved:

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P6 MG Oddity

2018-03-01 by jimpster@me.com

Hi All, First Post in this wonderful Group, so..... I have acquired a P6 with the clone KLM board, reverse of the board shows that all the necessary Bug Fixes

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Re: NVRAM to replace the 5514

2018-02-13 by axmonti@yahoo.ca

That s exactly what I was thinking of! Cost-wise, I should have jumped on the Kiwi boards a long time ago, but for some reason, I enjoy the challenge of fixing

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Re: [PolySix] NVRAM to replace the 5514

2018-02-13 by Roman Sowa

I did such breakout board for modern RAM chip long time ago. It was used in a few P6 out there, but with the advent of Kiwi6 it is not needed anymore. Still

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NVRAM to replace the 5514

2018-02-12 by axmonti@yahoo.ca

I was looking for a CMOS ram replacement for my friend s pinball machine and came across a 5114 NVRAM module

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No more sound on my Polysix

2018-01-20 by mr gham

Dear Polysix group, By trying to fix a memory issue, I switched on and off several time my Polysix . Now it turns on , all control seems to work on button,

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PolySix Key Tracking / Filter voice issue

2017-11-27 by swamp.gigs@googlemail.com

PolySix Key Tracking / Filter voice issue KLM366 v1 with daughterboard. The key tracking voltage is fed into IC23 on the 366, and output for each voice. As the

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Polysix tuning issue

2017-09-20 by mr gham

Hello Polysix group ! I have a big issue regarding the tuning of a polysix, I thought maybe would have a solution here.  I tried to calibrate it following the

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Weird cross modulation

2017-08-27 by Frank Carvalho

Fired up my P6 today, as it has been too quiet for too long, but found that it had a strange kind of background noise. After opening the filter entirely, no

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Re: poly mode inaccessible?

2017-08-08 by jw_dewdney@yahoo.com

thanks so much! i guess it just needed fresh eyes... i spent about four hours looking through my service manual and know i probably spent at least 15 minutes

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Re: poly mode inaccessible?

2017-08-05 by tlule@gmx.de

Hi, I attach the schema that I found on the web. Then, through carefully comparing this with the PCB, I found that the switches SW4, SW8, SW7, SW6, SW5 in the

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Re: poly mode inaccessible?

2017-08-05 by jw_dewdney@yahoo.com

I m getting back into this issue now and starting to read through the schmatics in the service manual ... unfortunately the scan of the KLM371 board isn t

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Re: poly mode inaccessible?

2017-08-05 by jw_dewdney@yahoo.com

a good scan of the 371 board layout showing the traces clearly would be a great start if anyone has one.

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Re: voice card calibration

2017-07-25 by jw_dewdney@yahoo.com

OK - UPDATE ... perhaps It had been too long since i tested those voice chips - but I thought (on your advice) to try the chip swap again.. and luckily I got

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Re: The Chemistry of Battery Leaks

2017-07-17 by hr.public@lonningdal.net

Thanks! Very informative video. And I find GOLT! s channel has many more intersting videos. https://www.youtube.com/channel/UClPK8ZHd90v36mFQnQXRobg

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The Chemistry of Battery Leaks

2017-07-17 by jw_dewdney@yahoo.com

Many seem under the impression that the battery leaks in a polysix, say, are a leaking ACID - which isn t true.. and I try to explain to people that they

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Re: voice card calibration

2017-07-15 by Jonathan Dewdney

sorry for the delay. i just found your response... hmmm really? yes, mine are socketed. do you think a good socket cleaning might make a difference? yes ... i

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Re: voice card calibration

2017-07-12 by Patrick Belcher

Not sure I fully understand the issue you re having, but are your chips socketed? And have you tried changing them? Sounds unlikely I know, but I ve seen a

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Re: voice card calibration

2017-07-12 by jw_dewdney@yahoo.com

thanks Anthony... good to know chip replacement doesn t do much either... i guess it leaves little else to check apart from trimmer function/continuity and/or

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Re: voice card calibration

2017-07-08 by a_cornish_2000@yahoo.com

Hi, I may have a similar problem. When calibrating the EG Intensity and trying to get the frequencies all 5kHz, at least three of the voices are well outside

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Re: voice card calibration

2017-06-12 by jw_dewdney@yahoo.com

thanks for the response Florian - so i m guessing that I need to troubleshoot the components only around the 2044 chip (since replacing the chips gives no

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Re: voice card calibration

2017-06-12 by jw_dewdney@yahoo.com

ANYONE have a clue as to what parts of the circuit on the voice card control resonance ? Not really getting anywhere with the schematic unfortunately ... eek

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Re: poly mode inaccessible?

2017-06-12 by jw_dewdney@yahoo.com

i was kind of hoping by now someone might have a suggestion to try ... i m a bit lost as to where to start ... anyone? thanks

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Re: Problem wit KLM367 clone

2017-06-01 by rnw6ueo2ru3grihf5iabauttna56367yo4n5umk4@yahoo.com

May seem strange but make sure the Normal/Test switch is not installed backwards. From your led description of each setting it sounds like this could be the

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Re: [PolySix] Problem wit KLM367 clone

2017-05-29 by <backshall1@bellsouth.net>

It might be the unstable clock problem. Make sure you use 10pF capacitor for C23, not 22pF as on original board. This is mentioned on Jed’s PCB Bugs/Errors

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Re: [PolySix] Problem wit KLM367 clone

2017-05-29 by moogchild synthdrome

Hi Marc, I bet your KLM367 clone is faulty. Is it the new one made by Andrej SH? Hola Marc, casi seguro que la nueva placa está mal. ¿Es la nueva que acaba

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Problem wit KLM367 clone

2017-05-29 by morelius21@gmail.com

Hi I have a Polysix whit a new clone pcb. I try to calibrate but is not posible. I try to explain my situation: When the test switch is in normal. The p6 has

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Re: permanet manual control for polysix?

2017-05-18 by roberflas@yahoo.com

I am considering buying kiwisix, but it is expensive to buy it in UK and super expensive to buy it in Spain. Thanks for your help, this group is great and I

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Re: permanet manual control for polysix?

2017-05-18 by josh.nursing@gmail.com

There are a few alternatives: 1. Get a clone PCB by Ted Jorgensen and re-populate it (you ll need the old board to transfer some rare components like

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