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The four “main” pins arenothing. They just ground the outer metal shell of the switch and keep it securelyon the board. There are only two pins that matter, and you can see which twothey are by looking at which pins actually have something connected to them.When enabled, these two pins are shorted together ( less than 0.5 ohms with anohmmeter). When disabled, they are not connected to each other (greater than 10Meg ohms between them).
Don B.
From: korgpolyex@yahoogroups.com [mailto: korgpolyex@yahoogroups.com ] On Behalf Of cc0919ship
Sent: Saturday, January 19, 201310:51 PM
To: korgpolyex@yahoogroups.com
Subject: [korgpolyex] Re: FrozenPoly 800
Thanks for the suggestions. I took a look, sequencerwas disabled. Perhaps the switch is bad? I'm not sure how to test it, it has 4main pins, then 14 smaller pins. I'm using a multimeter, but can't figure outwhat pins the switch is effecting.
--- In korgpolyex@yahoogroups.com,"backshall1" wrote: >
have no
> That sound like the sequencer "enable" switch is on, plus you > patches in memory. The sequencer switch on the back should be set to
original
> "disable" unless you are recording a sequence. Since this is an > Poly 800, there are several versions, some with a CR2032 lithium cell
inside > to hold the sound patches in memory when it is turned off, and some
without. > Since you just changed the battery, the memory will be empty or really
In" jack of an
> random.
>
> 1) Make sure the sequencer is switched to disable.
>
> 2) You need to reload the factory patches or program one of your own for
> testing purposes.
>
> If you've never loaded a patch audio file (.wav) on the "Tape > early 80's synth, you may want to start by just programming one of your
own. > Unfortunately there are 50 parameters and you need to make sure all of
them > are set at something reasonable to get a sound. You might start by setting
(31)
> the Attack, Decay and Release to 0 and the Break P, Sustain to maximum > for Deg1, Deg2 and Deg3. I don't think the Slope matters when set this
way. > If you hear noise, then alter parameter 33 (Noise level) to see if it
makes > a difference. Oh, and parameter 41 (Cutoff) should be turned up full
during > this testing.
able
>
>
>
> If the sequencer switch is really the main problem, then you should be > to get some sound out of it and we can help you get the factory patches
[mailto:korgpolyex@yahoogroups.com]On
> loaded if you need help.
>
>
>
> Don Backshall
>
>
>
> _____
>
> From: korgpolyex@yahoogroups.com > Behalf Of cc0919ship
800
> Sent: Saturday, January 19, 2013 9:32 PM
> To: korgpolyex@yahoogroups.com
> Subject: [korgpolyex] Frozen Poly 800
>
>
>
>
>
> Hello all,
>
> I'm wondering if you can help me out. I recently acquired a broken Poly > (original, not MKII.) It powers up, but immediately after powering up, the
and keys do
> screen reads "1.8 50 01." Buttons on the front panel do nothing, > not make noise. If I turn up the volume the whole way, I can hear the
filter > sweeping up and down. Here's where it gets interesting - I plugged in a
w:st="on">MIDI > keyboard, and when I play notes with the MIDI
keyboard, the 800 makes static > noises, and the last value on the screen increments by one.
800s
>
> I opened it up, checked the tactile switches (all seem fine.) I also
> replaced the internal CMOS battery. I was under the impression that MKI > didn't have this, so the main board may have been replaced by someone
along > the line.
>
> Anyway, has anyone had a problem like this and could help me out? It is
> potentially one of the ICs, but I have no idea how to test them.
>
> Thanks,
>
> Christian
>