... 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...
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...
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...
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...
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...
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....
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...
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...
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...
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...
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...
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...
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...
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 ......
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...
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....
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...
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...
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...
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...
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...
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...
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...
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? ...
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...
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...
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