Re: Polysix Issues with: VCA / Octave Switch / Program 1 LED
2011-01-27 by Alexis V. Rogers
Thanks Andy, I rechecked the connections and everything was good. The battery voltage was low, however, so I swapped in a new one. Now, the Octave switch and
Messages
Browse messages
Page 59 of 114 · 5658 messages matched
Re: [PolySix] Polysix Issues with: VCA / Octave Switch / Program 1 LED
2011-01-26 by Andrew Jury
Hi, Make sure line DO0 terminates at all the places on the schematic where it is supposed to (CN06, IC22, IC28, etc). The P1 LED will light on active low, so
Polysix Issues with: VCA / Octave Switch / Program 1 LED
2011-01-26 by Alexis V. Rogers
I have a PolySix that suffered from battery leakage that I m trying to bring back to life for a friend. This is the fourth or fifth P6 I ve worked on in the
Re: [PolySix] Re: MG > VCA Issue
2011-01-23 by Andrew Jury
Hi, As ever your persistence was rewarded! Good job and thanks for letting the group know. Cheers, Andy ... [Non-text portions of this message have been
Re: MG > VCA Issue
2011-01-23 by djvlr
Issue resolved. I had to go open it up to swap some of the tact-switches and middle-pieces , and decided to look into this issue again. I found a similar
Re: KLM-367A Clone -- Mouser Project parts list created
2011-01-17 by randyandconnie@theschniers.net
Hi, I just signed in anonymously under Mouser s site and verified that the project list is unmodified. No worries! Randy
Re: KLM-367A Clone -- Mouser Project parts list created
2011-01-16 by Scott
RE: [PolySix] KLM-367A Clone -- Mouser Project parts list created
2011-01-15 by backshall1 (dsl)
I just tried to change the name and save Randy s project to a new one of my own and do some edits. Now, when I click on Randy s link, it sends me to the
Re: Just a word of warning - clone board builders
2011-01-14 by ML
Thank you! That certainly makes a difference!
Just a word of warning - clone board builders
2011-01-14 by y964omw
Hi, Just had a clone board in which the constructor was having problems with the MG circuitry. Warning! Do not be tempted to use transistor types 2SA733 (as
Re: 367A Clone Question
2011-01-13 by ML
Well ~ getting there slowly! :)
Re: 367A Clone Question
2011-01-13 by ML
Looks like the key assign switches also light up and in my case Chord Memory remains on the whole time, whether in test mode or not. I also can t seem seem to
Re: [PolySix] Re: 367A Clone Question
2011-01-13 by Jed Jorgensen
Nice job everybody! ... [Non-text portions of this message have been removed]
Re: 367A Clone Question
2011-01-13 by ML
A faulty crystal! My goodness. Relieved. At least I m at step 1! :)
Re: 367A Clone Question
2011-01-13 by ML
Thanks so much. I m on it.
Re: [PolySix] Re: 367A Clone Question
2011-01-13 by Andrew Jury
OK. Pin 16 on CN10 is ground but just about anywhere earthy will do. What you are looking for a nice set of rectangular pulses on pins 1-14. If you see nothing
Re: 367A Clone Question
2011-01-13 by ML
Will do. Incidentally mine is now upright. I had to replace those smaller headers I had put in with molexes. I know I had continuity between the 367 and the
Re: [PolySix] Re: 367A Clone Question
2011-01-13 by Andrew Jury
Right, check the voltages at CN10! If you have a logic problem or scope you will need to see if you have pulse trains on pins 1 to 14. A very common problem is
Re: 367A Clone Question
2011-01-13 by ML
No, not even then. No 1-8 LEDs at any time.
Re: [PolySix] Re: 367A Clone Question
2011-01-13 by Andrew Jury
I¹ve just been re-reading your post and you say that none of the LEDs light at all? Does A1 light when the P6 is first switched on and not in Œtest¹ mode?
Re: 367A Clone Question
2011-01-13 by ML
Hi Andy et al! Here s what I have so far: R56 - 14.95K R57 - 10.09K R73 - 0.995K R74 - 250.4 R75 - 19.93K R83 - 1.796K (1/4 Watt though) R84 - 0.995K R85 -
Re: [PolySix] 367A Clone Question
2011-01-13 by Andrew Jury
Hi! You know I had the very same problem last week with a new board I was building. I just couldn¹t get the calibration of the d/a converter right. What had
367A Clone Question
2011-01-13 by ML
I had to set my 367 clone aside for some time and finally had a chance to get back to it. Sadly I can t get past that first step in the calibration. Patch LEDs
Re: [PolySix] Re: Polysix effects doesn't work
2011-01-06 by Andrew Jury
Make sure the op-amp that is buffering the output of the mux is still behaving like a an op-amp! Also, do make sure you are in ŒManual¹ mode before measuring
Re: Polysix effects doesn't work
2011-01-06 by radek
hmmm.... intensity wasn t vary ing when i was checking pin 1. when it was on 0 it was 0.5 v when it was set on 10 voltage was 0.01 v or sth like that...
Re: [PolySix] Re: Polysix effects doesn't work
2011-01-06 by Andrew Jury
Hi Radek, Seems that the KLM-367 is not the issue. BTW the intensity voltage should vary from 5V (0) to +5v (10). Next turn to the KLM-368 and check the
Re: Polysix effects doesn't work
2011-01-06 by radek
Hi there! pin 1, 10 and 11 went high. also voltage on pin 1 of ic16 changed when i was turning speed knob.
Re: [PolySix] Polysix effects doesn't work
2011-01-02 by Andrew Jury
Hi, Check the output of IC34 at the following pins: 10 - chorus 1 phase 11 ensemble I believe these should go high went the effect is selected. If there
Polysix effects doesn't work
2011-01-02 by radek
I have another Polysix that had battery leak problem. I ve managed to fix broken traces etc. The last thing which doesn t work are effects. When i switch it to
Re: Midi Johannes kit
2010-12-26 by randyandconnie@theschniers.net
Hi -- I corresponded with Johannes this past November and here is the information he gave me, including price. You would of course want to contact him
Re: Polysix works OK for a while then goes weird.
2010-12-26 by vib.ration33
Thanks! I was actually able to remedy the main problem. Some rust or similar substance connected pins 11,12 and 13 in the connector CN10, which connects
Re: [PolySix] Midi Johannes kit
2010-12-26 by Andrew Jury
Hi, You really should contact Johannes about this to discuss the options. What I can tell you is that he will only sell you a blank pcb and EPROM I am going to
Re: [PolySix] Polysix works OK for a while then goes weird.
2010-12-26 by klosmon
First thing to do is check (with a scope) ICs 18 and 19, which provide the demultiplexed signals for those CVs. 4051 CMOS ICs can become intermittently faulty
Polysix works OK for a while then goes weird.
2010-12-25 by vib.ration33
Hello, I ve been a P6 owner for about 15 years. The machine was thoroughly checked when I bought it, and the infamous battery was replaced before any damage
Re: [PolySix] Re: Public thanks to Andy Jury
2010-12-24 by Frank McGing
Just want to add my thanks to Andy as well! My P6 is still alive and well, and you did a magnificent job on the new 367. Looking forward to hearing about
RE: [PolySix] Re: Public thanks to Andy Jury
2010-12-24 by backshall1 (dsl)
I ve had three DW8000 s in this year, but I don t think any of them had any real electronic problems. Just really dirty output jacks, key contacts, button
Re: [PolySix] Re: Public thanks to Andy Jury
2010-12-23 by Andrew Jury
Yes, please no more! If my head gets any bigger then it will not fit out of the door. 2010 has been a good year for the Polysix and I understand there are some
RE: [PolySix] Re: Public thanks to Andy Jury
2010-12-23 by backshall1 (dsl)
We could probably flood this board with praise for Andy and Jed, and they would deserve every bit of it and more. Giving a classic like the Polysix new life is
Re: Public thanks to Andy Jury
2010-12-22 by n0disc0
I had the chance to meet Andy on this message board and I m very grateful he s turned my dead Polysix back to life (the name of an american hippie band is
Korg Trident antilog calibration
2010-12-19 by Malte Rogacki
(This is crossposted to both vintagesynthrepair and polysix groups). I m currently trying to calibrate a Trident (Mk I, not Mk II). The overall shape is good
Midi Johannes kit
2010-12-14 by sullik1
Hi. I m very interested in the Johannes kit. I have a few questions: I have not talked to Johannes, but is it still he who will sell the DIY kits? If so, will
Polysix run fine during 15min after repair, and then go bad :(
2010-12-09 by elmiradors
Hello, I ve got a Korg Polysix that the battery leaked. I have fixed the traces that have been damaged, I changed the IC30/31 chips (remplaced by HD74LS08P in
Re: [PolySix] KLM-367A Clone -- Mouser Project parts list created
2010-12-05 by Andrew Jury
Lots of excellent resources now here in this group, keep up the good work! Cheers, Andy ... [Non-text portions of this message have been removed]
KLM-367A Clone -- Mouser Project parts list created
2010-12-05 by rschnier1
Hi everyone, In the course of constructing a couple of the KLM-367A clone boards, I created a Project parts list based on the Google document from Jed and
Re: [PolySix] KLM367A clone: Another parts error?
2010-12-04 by Jed Jorgensen
Yes, thanks! Good catch! I ve updated both the Mouser and Farnell parts lists accordingly. ... [Non-text portions of this message have been removed]
Re: [PolySix] KLM367A clone: Another parts error?
2010-12-04 by Andrew Jury
Well spotted! I am just sitting here in front of an original and the ceramic disk is marked Œ471¹ (470pF), so yes, you are right. Jed: Can you change the
KLM367A clone: Another parts error?
2010-12-04 by Malte Rogacki
Hello; I ve noticed that I needed to use a very high level to load sounds From Tape , much higher than with the original boards. C4 is given a 0.047uF ceramic
Re: [PolySix]
2010-12-03 by Andrew Jury
Hi Arturo, No this is not right at all. Are you sure when you connected the dummy load to the PSU you didn¹t short out the pins? This will take out the 5v
(no subject)
2010-12-03 by Arturo B
Hey group. I ve started on the calibration of my first board.However, I seemed to have lost the functionality of the entire Key Assign Mode section. None of
RE: [PolySix] Polysix key contact replacement
2010-12-02 by Arturo B
My concern was more that they d fall off... But thanks for the positive report. I ll be contacting him shortly! Arturo.....