Archive of the former Yahoo!Groups mailing list: Discussion about the Korg PolySix synthesizer

previous by date index next by date
  topic list next in topic

Subject: How to tell if Opto Couper is dead?

From: "pushwithlegs" <pushwithlegs@gmail.com>
Date: 2013-07-19

I'm working on a poly 6 and I'm having trouble trying to tune it. I can get it in tune to C on a single octave but I can't seem to get anywhere near the range on the trimpots to scale it correctly across the keyboard.

I have done some reading on the forum and people had said to check chip at PC1 on KLM 366. Could someone walk me thru how one goes about testing the functionality of this chip/opto coupler?
cheers