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

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Subject: Re: [PolySix] Weird assigner issue

From: Frank Carvalho <dko4342@vip.cybercity.dk>
Date: 2013-11-18

Poly/Chord/Uni do not seem to have any effect, and the LEDs don't come on.
Hold is on when the synth is turned on, but can be turned off and on. Hold now lights up.
If the keys are numbered repeatedly with 1 to 8, beginning with the lowest key, then it is every number 6 and 7 that is off.
The arpeggiator sends repeated trig signals, but as the same note sounds every time, I cannot hear anything but the repetition. Actually the sound is much like a detuned unison mode.

And, yes, I have an ancient Philips oscilloscope, if necessary.

I certainly hope I can fix it. I love this synth.

Oh, before anyone asks, I did the battery mod long ago, before any leaks occurred.

Thanks

/Frank

On 11/18/2013 09:09 AM, Johannes Hausensteiner wrote:
 

The issue is related to the KLM-366 Key Assigner CPU circuitry. Probably
two of the I/O lines are dead (remember, it is an 8bit CPU).
Which keys do work and which don't?
Do the key assigner buttons (POLY/UNI/CHORD/HOLD/ARP) work?
Does the arpeggiator don anything?

Do you have access to an oscilloscope?

This surely can be fixed!

Johannes