Don Backshall solved all of my PolySix issues and did it for basically a handshake. Furthermore, he mailed my KLM-367 board back to me in good faith before my PayPal payment even cleared!!! I sent him as much extra money as I could because he really deserved it. Here's the correspondence bleow:
If the e-mail below can't restore your faith in blind internet transactions, I don't know what will.
(Don's Response October 6)
Okay, the boards are on their way back. Priority Mail with delivery conf # 03103490000077720492.
Still three problems that I am aware of:
1) D/A calibration - Can't get the right lights to come on, but seems to be in spec anyway.
2) MG leak - I'm assuming this is caused by some crud between pin 1 and 2 on the bottom of CN06 header. I know these are a pain to remove, but I think it needs to be done. Sounds really bad when it's cold. Gets a little better when it warms up.
3) MG delay - Known problem with 2N3904 in Q5 position. Using the (2SC945) transistor from the old board seems to fix this, but the pins are different. You can compare what's connected to what between old and new boards to see what pin goes where. One of my old boards had a 2SC2785.
$8.60 postage
$1.60 fuses
$0.15 capacitor
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$10.35 grand total - You can send it to this Paypal acct
backshall1@bellsouth.net I'm pretty sure you can get this board sounding just like it should, even if you can't get the right calibration lights to come on.
Have fun,
Don Backshall
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(my response to him solving my problems October 05)
That's great!! It looks like I'm a decimal doofus! Ha Ha. What's the bill? I can send you a PayPal payment today or tomorrow. I'll praise your expertise on the Korg PolySix forum too if you're intersted.
Thanks again,
-Mike