Re: [PolySix] Re: Polysix repair - doesn't sound as it should
2008-09-22 by klosmon
There shouldn t be any connectivity -- either there s a short you haven t found yet, or there s a problem with IC 31. I ve about reached the limit of my
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Re: Polysix repair - doesn't sound as it should
2008-09-22 by choco
Hi! After cutting almost every trace on the D00 bus i realised that that wasn t the matter of that short I discovered before. In fact I m not sure about what s
Re: [PolySix] Re: Polysix repair - doesn't sound as it should
2008-09-21 by klosmon
Sounds like D00 is shorted; start by cutting the traces to that line around IC31 -- if the short goes away, you know where to look. If not, cut the D00 trace
Re: Polysix repair - doesn't sound as it should
2008-09-21 by choco
Hi. I ve checked tha traces and seemed to be ok, but accidentaly I found something that I didn t understand. The D00 (CN06-3) seems to be connected to the +3.6
Re: [PolySix] Re: Polysix repair - doesn't sound as it should
2008-09-20 by klosmon
Most likely cause is another bad trace. Check all the traces to CN06 (D00 - D03; P10 - P13). Also keep in mind that these signals each have to connect to
Re: Polysix repair - doesn't sound as it should
2008-09-20 by choco
Hi! Finnaly I managed to repair it! It was just a track that I cut accedentally and was under a printed number on the board (it was almost impossible to see
Re: [PolySix] Re: Problem with key contacts months after applying keypad repair kit
2008-09-20 by Johannes Hausensteiner
The cause of the problem is that the conductive rubber looses its conductivity by drying out. You can improve a little by cleaning, but it will soon be back to
Re: Problem with key contacts months after applying keypad repair kit
2008-09-19 by hoggybogger
Now there is something I can believe in! I will try your repair Johannes this weekend and post my results. I will also try an eraser to remove the coating
Re: Anyone know how it really works?
2008-09-19 by Andrew Jury
Hi, If you have been following the sorry tale of my P6 repairs then a small word of warning for you. If you ever need to change the d/a converter (IC33) or
Re: [PolySix] Re: How long does a tuning last?
2008-09-19 by Dave Garfield
Hi, Polysixers! Funny thing -- The same thing happened with my Polysix! It was in perfect playing condition when I packed it up for moving. Unfortunately,
Re: How long does a tuning last?
2008-09-19 by goxflee
Thanks for the responses all! I must say, I have not been as involved with my P6 as I should be the past couple years. It s my first analog synth and so it has
Re: Anyone know how it really works?
2008-09-18 by Andrew Jury
Hi, This one is really turning into a pig! Here s what I have done and still I have a sweep voltage on each demux output from -4.58 to 0.16v. Just imagine what
Re: How long does a tuning last?
2008-09-18 by Andrew Jury
Hi, Can you tell the panel of esteemed experts here whether your P6 is uniformly out of tune or are there regions of the keyboard which are worse than other?
Re: [PolySix] How long does a tuning last?
2008-09-18 by Chromatest J. Pantsmaker
I don t know a lot about the tuning circuitry, but if there are electrolytic caps in it, those could be going soft. How long did you let the polysix warm up
How long does a tuning last?
2008-09-18 by goxflee
I tuned my Polysix about 5 years ago. The other night, trying to tune up to a melodica, which is in correct tuning, I had to turn the tuning knob all the way
Re: Polysix repair - doesn't sound as it should
2008-09-18 by choco
Hi- Thank you for your fast and kind reply. I have visited your website several times when doing research for my P6 and I had you in mind as an option if I
Re: [PolySix] Problem with key contacts months after applying keypad repair kit
2008-09-17 by Johannes Hausensteiner
I have successfully used a different method. I used it on the Polysix, which still works all keys, and on several VCR [..] remote controls. Go to the message
Re: [PolySix] Polysix repair - doesn't sound as it should
2008-09-17 by klosmon
Hello- Having repaired many of these, I would suggest that the most likely cause is damaged traces due to the battery leak. Even if the board looks good, the
Polysix repair - doesn't sound as it should
2008-09-17 by choco
Hi! After digging within the messages I haven t found any similar situation, so I decided to post. I bought a year ago and old polysix and it sounded fine to
Re: Problem with key contacts months after applying keypad repair kit
2008-09-16 by Andrew Jury
Hi, Well I have to tell you that I cleaned my keyboard switch contacts with good old fashioned isopropyl and a q-tip and I never had any more problems after
Re: [PolySix] Problem with key contacts months after applying keypad repair kit
2008-09-16 by Chromatest J. Pantsmaker
The only repair that I ve ever used was the good-old pencil eraser to get rid of the oxidation covering the contacts. good luck! ... -- .sig -Chromatest J.
Problem with key contacts months after applying keypad repair kit
2008-09-16 by hoggybogger
Hey all. About a year or more ago I was having occasional dropouts on certain notes, and some notes that I had to push just right, or really hard to get to
Re: P6 effects unit
2008-09-13 by del_poolp
Hi, I have one KLM368 Board and i have the same idea of you, but, i don t know the wiring of this board ... have a tips for me ???? Thanks, PooLP ... metal ...
Re: [PolySix] polysix in korg legacy
2008-09-12 by Johannes Hausensteiner
I dont know about the file formats of the Korg Legacy Polysix, but I assume they are able to import tape dumps of the original Polysix. You can save a .P6 file
Re: polysix in korg legacy
2008-09-11 by radek_tymecki
... use p6 editor to open and view patches. try to set knobs in same position as shown. but it doesn t sound same
polysix in korg legacy
2008-09-11 by snelldominic
hi, i have korg legacy and can acce3ss polysix sounds through that, how can i open sounds that are in p6 format? thanks dom
Re: polysix memory problem
2008-09-07 by radek_tymecki
It can be found here
Re: [PolySix] Re: Anyone know how it really works?
2008-09-05 by Johannes Hausensteiner
Of course, this is the reason fo rall that multiplex stuff. The analog controlo voltages are digitised (via the D/A converter) under software control and saved
Re: polysix memory problem
2008-09-05 by Andrew Jury
Hi, First check the continuity for the tracks around the data bus (DB0-DB7) connected to IC22 (CPU) and IC30/31/26/34. However, I have had just such a problem
polysix memory problem
2008-09-05 by wasteking1
my polysix has had a few 367 corrosion problems but after some rewiring it now has all leds and switches working ,(it used to have 5 led s on all the time and
Re: Suddenly out of tune -but still problems after changing PC-1 and R93
2008-09-05 by hjulskov
Hi Andy, I ll try swapping the SSM2044 s -after the weekeend (I m away this weekend). I didn t get the PM -try sending it again. Have a nice weekend! Peter
Re: Anyone know how it really works?
2008-09-04 by Andrew Jury
Hi, Seem to be getting nowhere fast with this one. I made the observations with the oscilloscope you mentioned and seemed to be able to reproduce the waveforms
Re: Suddenly out of tune -but still problems after changing PC-1 and R93
2008-09-04 by Andrew Jury
Peter, If only the P6 had a sample and hold circuit! Good point about capacitors, especially electrolytic types, which could have well dried up after 25+ years
Re: Suddenly out of tune -but still problems after changing PC-1 and R93
2008-09-03 by hjulskov
I m no expert either, but it sounds possible that the caps needs replacement -if no other suggestions comes up -that would be my first attempt to fix it. Btw.
Re: To Tape - Load/Error
2008-09-01 by Andrew Jury
Hi S, If your KLM-367 (processor) board has been repaired in the past due to a battery leak then it might be worth revisiting the repaired tracks around IC32
Re: Anyone know how it really works?
2008-09-01 by Andrew Jury
Phil, No, please do quote away! This is interesting because the KLM-367 board on this P6 was pretty badly burnt with blue nickel cadmium pixie dust. It would
To Tape - Load/Error
2008-09-01 by s*
Hi there, My Polysix has recently started to power on with the To Tape and Error/Cancel lights on. I also notice that it will only allow me to use Manual
Re: [PolySix] Re: Anyone know how it really works?
2008-09-01 by Johannes Hausensteiner
Andrew, Yes, the voltage must swing between -5V and +5V. It is not so easy to tell whether it happens on the input side (KLM-369/370) or the output side
Re: Anyone know how it really works?
2008-09-01 by radek_tymecki
Remember that MG is connected with frequency knob. If it runs low on max setting then first try to look at dead lfo capacitors
Re: Anyone know how it really works?
2008-09-01 by synx508
... That s how it works, but before you go suspecting the mux, are you sure you re getting the full range of digital data on A, B and C at both ends? The at
Re: Anyone know how it really works?
2008-08-31 by Andrew Jury
Johannes, After a major fault finding session I would like to report back the following: The first thing I did was be rather lazy and swap the transconductanc
Re: Anyone know how it really works?
2008-08-29 by Andrew Jury
Johannes, This is an extremely comprehensive answer. Many thanks for taking the time to explain. Let me read carefully, disgest and perform some more tests on
Re: [PolySix] Anyone know how it really works?
2008-08-29 by Johannes Hausensteiner
The oscillator design is of the multivibrator type. The not so common thing is that it is voltage controlled. The control voltage is buffered by IC13. it is
Anyone know how it really works?
2008-08-29 by Andrew Jury
Hi! I have just released with my MG (LFO) seems to be running very slowly with the frequency knob at 10. Before I dip in with my soldering iron does anyone
Re: Check out this interesting Polysix mods !!
2008-08-28 by Andrew Jury
Ha! Best cosmetic change I ever saw to a polysix was where the owner had reversed the key colours! So all the #/b notes were white and the regular ones black.
Re: PolySix Amp Voltage?
2008-08-28 by jjmcclear
Thanks guys, very helpful info. I appreciate it!
Re: Check out this interesting Polysix mods !!
2008-08-28 by jjmcclear
I Know! Why!? I would like to paint mine in Clavia-Red. :)
Re: Check out this interesting Polysix mods !!
2008-08-28 by Andrew Jury
Mr Keio would be turning in his grave! Medicine pink? Neat and professional looking though with some good new features....
Re: PolySix Amp Voltage?
2008-08-28 by Andrew Jury
Hi, I tend to agree with CJP! The appegiator in the P6 is controlled by a NE555 timer chip located on the KLM-371 board. Check the values of capacitors C1, C2,
Re: [PolySix] Re: PolySix Amp Voltage?
2008-08-28 by Chromatest J. Pantsmaker
The power supply isn t a store-replaceable item if I remember correctly... It certainly wouldn t hurt to change out all the electrolytic capacitor in the