Discussion about the Korg PolySix synthesizer group photo

Yahoo Groups archive

Discussion about the Korg PolySix synthesizer

Index last updated: 2026-03-30 17:40 UTC

Message

KLM-367a clone calibration issues

2014-01-28 by <lighterthanairflight@gmail.com>

Hello, I just recently completed a KLM-367a clone and after installing the board I am having some difficulties calibrating it. I am following the calibration instructions, and have repeated the steps over and over again.


here are the issues I am experiencing.

1. when I adjust VR1. I can get all of the program lights to light up, but when I remove the 56K resistor from the test jig on the KLM376 board Bank D and Program 4 light up instead of Bank A and Program 1. this problem continues on. so even after I adjust VR6 and VR7 once I turn the synth off and back on in steps 7 and 8 the lights that light up initially are bank D and program 4.
I can select program 1 and bank A however.

I have not taken to calibration further than this, but the synth does make sound. the MG is on always. no matter the position of switches/pots oddly I cant even see the MG on CN03-05 for calibration step 3.

anyway... I have looked over the clone board to look for mistakes, but it looks good. any thoughts or advice would be much appreciated!

-steve

Attachments