Discussion about the Korg PolySix synthesizer

Hey everyone! Having some frustrating issues I can't seem to track, so figured I'd ask here :)

I'll go in chronological order of what's been going on and what I've done.

- Bought the Polysix with the battery replaced, but traces weren't pretty.

- Only things that worked were volume, bend, arp section, and then poly/unison/hold.

- MG LED starting slow on power-up -> constant on

- Repaired the traces and replaced the closest electrolytic and 74LS08.

- Same behavior with the controls from above, but now the patch select, save, etc. was working. MG LED still behaving strangely

- Purchased the clone 367, all new IC's, but salvaged the ROM, thermistor, and Q3 (5-pin transistor?)

- Same original behavior with the patch memory not working again and most controls not functioning.

- Tried calibration procedure, getting correct voltage and was able to jumper with a 56k resistor, adjusted VR1 to get all LED's lit, but once I removed the resistor, program 1 & 5 are only lit (no bank).

- Replaced the 2 4051's on the control panel boards with no change.

I think that about sums it up! I made the two corrections to the 367 clone, but I haven't changed the one capacitor to 10pf. I don't know if this might be causing some of the problems, but it was originally problematic, so not sure.

Any help would be awesome :) Thanks so much!

I did upload some scope captures to the files section a while back with captions.These might help if someone is using a scope to troubleshoot the front panel scanning.

      From: "nick.oring@gmail.com [PolySix]" <PolySix@yahoogroups.com>
 To: PolySix@yahoogroups.com 
 Sent: Wednesday, November 26, 2014 11:43 AM
 Subject: Re: [PolySix] Re: Some Issues
   
    Continuity is checking out on all connectors. One thing I did just notice, when I turn the cutoff high, it scrolls through presets 5-8. so like 7 - 10 o'clock make those light.   #yiv5710110643 #yiv5710110643 -- #yiv5710110643ygrp-mkp {border:1px solid #d8d8d8;font-family:Arial;margin:10px 0;padding:0 10px;}#yiv5710110643 #yiv5710110643ygrp-mkp hr {border:1px solid #d8d8d8;}#yiv5710110643 #yiv5710110643ygrp-mkp #yiv5710110643hd {color:#628c2a;font-size:85%;font-weight:700;line-height:122%;margin:10px 0;}#yiv5710110643 #yiv5710110643ygrp-mkp #yiv5710110643ads {margin-bottom:10px;}#yiv5710110643 #yiv5710110643ygrp-mkp .yiv5710110643ad {padding:0 0;}#yiv5710110643 #yiv5710110643ygrp-mkp .yiv5710110643ad p {margin:0;}#yiv5710110643 #yiv5710110643ygrp-mkp .yiv5710110643ad a {color:#0000ff;text-decoration:none;}#yiv5710110643 #yiv5710110643ygrp-sponsor #yiv5710110643ygrp-lc {font-family:Arial;}#yiv5710110643 #yiv5710110643ygrp-sponsor #yiv5710110643ygrp-lc #yiv5710110643hd {margin:10px 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I seem to recall someone on this list was looking for the small off-white trimpotsused on the KLM-366 board recently.  If you are still interested, I 
now have a whole board full of them and would be happy to mail you a few 
for free.
   Bob

    
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   .

It wasn't me, but you are a true mensch for that extremely generous offer, Bob!Dave Garfield 

     On Friday, December 12, 2014 4:17 PM, "Bob Grieb bobgrieb@yahoo.com [PolySix]" <PolySix@yahoogroups.com> wrote:
   

     I seem to recall someone on this list was looking for the small off-white trimpotsused on the KLM-366 board recently.  If you are still interested, I 
now have a whole board full of them and would be happy to mail you a few 
for free.
   Bob

    
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     <em>#yiv4856295655 #yiv4856295655 -- #yiv4856295655ygrp-mkp {border:1px solid #d8d8d8;font-family:Arial;margin:10px 0;padding:0 10px;}#yiv4856295655 #yiv4856295655ygrp-mkp hr {border:1px solid #d8d8d8;}#yiv4856295655 #yiv4856295655ygrp-mkp #yiv4856295655hd {color:#628c2a;font-size:85%;font-weight:700;line-height:122%;margin:10px 0;}#yiv4856295655 #yiv4856295655ygrp-mkp #yiv4856295655ads {margin-bottom:10px;}#yiv4856295655 #yiv4856295655ygrp-mkp .yiv4856295655ad {padding:0 0;}#yiv4856295655 #yiv4856295655ygrp-mkp .yiv4856295655ad p {margin:0;}#yiv4856295655 #yiv4856295655ygrp-mkp .yiv4856295655ad a {color:#0000ff;text-decoration:none;}#yiv4856295655 #yiv4856295655ygrp-sponsor #yiv4856295655ygrp-lc {font-family:Arial;}#yiv4856295655 #yiv4856295655ygrp-sponsor #yiv4856295655ygrp-lc #yiv4856295655hd {margin:10px 0px;font-weight:700;font-size:78%;line-height:122%;}#yiv4856295655 #yiv4856295655ygrp-sponsor #yiv4856295655ygrp-lc .yiv4856295655ad {margin-bottom:10px;padding:0 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I hope that's a good thing...
Or is it like "putz"?  :-)

      From: "Dave Garfield daveogarf@yahoo.com [PolySix]" <PolySix@yahoogroups.com>
 To: "PolySix@yahoogroups.com" <PolySix@yahoogroups.com> 
 Sent: Friday, December 12, 2014 6:27 PM
 Subject: Re: [PolySix] Trimpot available
   
    It wasn't me, but you are a true mensch for that extremely generous offer, Bob!Dave Garfield 

     On Friday, December 12, 2014 4:17 PM, "Bob Grieb bobgrieb@yahoo.com [PolySix]" <PolySix@yahoogroups.com> wrote:
   

     I seem to recall someone on this list was looking for the small off-white trimpotsused on the KLM-366 board recently.  If you are still interested, I 
now have a whole board full of them and would be happy to mail you a few 
for free.
   Bob

    
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   .

Actually, the board that I bought came with 6 of the SSM2056 env gen chips
and 5 of the SSM2044 filter chips.   I have tested the 2056's in my PolySix andthey are fine.   I will test the SSM2044 chips maybe tonight or tomorrow.  Ifanyone needs one of these for replacement, or as a spare, please contact me.They are not free, but will be less than recent ebay pricing.
     Bob

      From: "Bob Grieb bobgrieb@yahoo.com [PolySix]" <PolySix@yahoogroups.com>
 To: "PolySix@yahoogroups.com" <PolySix@yahoogroups.com> 
 Sent: Friday, December 12, 2014 6:44 PM
 Subject: Re: [PolySix] Trimpot available
   
    I hope that's a good thing...
Or is it like "putz"?  :-)

 

     From: "Dave Garfield daveogarf@yahoo.com [PolySix]" <PolySix@yahoogroups.com>
 To: "PolySix@yahoogroups.com" <PolySix@yahoogroups.com> 
 Sent: Friday, December 12, 2014 6:27 PM
 Subject: Re: [PolySix] Trimpot available
   
    It wasn't me, but you are a true mensch for that extremely generous offer, Bob!Dave Garfield 

     On Friday, December 12, 2014 4:17 PM, "Bob Grieb bobgrieb@yahoo.com [PolySix]" <PolySix@yahoogroups.com> wrote:
   

     I seem to recall someone on this list was looking for the small off-white trimpotsused on the KLM-366 board recently.  If you are still interested, I 
now have a whole board full of them and would be happy to mail you a few 
for free.
   Bob

    
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   .

No, no, no!  "Mensch" means the salt of the Earth, a true gentleman and a scholar, that one person for whom Diogenes searched, etc.  Suffice it to say that it's a compliment of the highest order.And as long as I have you all here, I'll wish everyone a truly happy and prosperous holiday season!Dave Garfield 

     On Friday, December 12, 2014 4:47 PM, "Bob Grieb bobgrieb@yahoo.com [PolySix]" <PolySix@yahoogroups.com> wrote:
   

     I hope that's a good thing...
Or is it like "putz"?  :-)

      From: "Dave Garfield daveogarf@yahoo.com [PolySix]" <PolySix@yahoogroups.com>
 To: "PolySix@yahoogroups.com" <PolySix@yahoogroups.com> 
 Sent: Friday, December 12, 2014 6:27 PM
 Subject: Re: [PolySix] Trimpot available
   
    It wasn't me, but you are a true mensch for that extremely generous offer, Bob!Dave Garfield 

     On Friday, December 12, 2014 4:17 PM, "Bob Grieb bobgrieb@yahoo.com [PolySix]" <PolySix@yahoogroups.com> wrote:
   

     I seem to recall someone on this list was looking for the small off-white trimpotsused on the KLM-366 board recently.  If you are still interested, I 
now have a whole board full of them and would be happy to mail you a few 
for free.
   Bob

    
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   .

Hello again,
    I have tested the SSM2044 filter chips as well.   I have two of thoseto sell, and four of the SSM2056 Envelope generators to sell.   Also, 
I have a tested, known good PolySix Key assigner MCU D8049C 217.
Prices are:
SSM2044    ebay recent sales $19.99, $23, and $14
My price: $15 each plus around $3 postage to USA addresses
SSM2056  ebay recent sales $58, $32one didn't sell for $32 also
My price: $20 each plus around $3 postage to USA addresses
PolySix Key Assigner MCU D8049C 217Hasn't sold yet on ebay at $33 plus $16 S&H 

My price:   $20 plus $3 postage to USA addresses
I will combine shipping.  All of these parts are from late 1981.

     Bob

   From: "Bob Grieb bobgrieb@yahoo.com [PolySix]" <PolySix@yahoogroups.com>
 To: "PolySix@yahoogroups.com" <PolySix@yahoogroups.com> 
 Sent: Friday, December 12, 2014 6:51 PM
 Subject: Re: [PolySix] Trimpot available
   
    Actually, the board that I bought came with 6 of the SSM2056 env gen chips
and 5 of the SSM2044 filter chips.   I have tested the 2056's in my PolySix andthey are fine.   I will test the SSM2044 chips maybe tonight or tomorrow.  Ifanyone needs one of these for replacement, or as a spare, please contact me.They are not free, but will be less than recent ebay pricing.
     Bob

 

     From: "Bob Grieb bobgrieb@yahoo.com [PolySix]" <PolySix@yahoogroups.com>
 To: "PolySix@yahoogroups.com" <PolySix@yahoogroups.com> 
 Sent: Friday, December 12, 2014 6:44 PM
 Subject: Re: [PolySix] Trimpot available
   
    I hope that's a good thing...
Or is it like "putz"?  :-)

 

     From: "Dave Garfield daveogarf@yahoo.com [PolySix]" <PolySix@yahoogroups.com>
 To: "PolySix@yahoogroups.com" <PolySix@yahoogroups.com> 
 Sent: Friday, December 12, 2014 6:27 PM
 Subject: Re: [PolySix] Trimpot available
   
    It wasn't me, but you are a true mensch for that extremely generous offer, Bob!Dave Garfield 

     On Friday, December 12, 2014 4:17 PM, "Bob Grieb bobgrieb@yahoo.com [PolySix]" <PolySix@yahoogroups.com> wrote:
   

     I seem to recall someone on this list was looking for the small off-white trimpotsused on the KLM-366 board recently.  If you are still interested, I 
now have a whole board full of them and would be happy to mail you a few 
for free.
   Bob

    
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   .