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Hey All,
So I have been working on a Polysix for just about a year now and I could use some help. This was a basement special and I went through quite the process to get it back up to speed, went through all the boards with 99.9% to clean it up and replaced some chips that had some compromised due to the dreaded battery acid. I bought the kiwisix board and replaced the old one out, I went through the process of tuning it and I had no luck getting it to tune it correctly. I let it sit for about 2 months after feeling pretty defeated ( I bought it for $300 and put another $550 for motherboard and power supply) and now I am ready to tackle it again. Once I turn it on I try to play a note in poly mode it doesn't work properly. It throws a high pitched whine like the freq envelope is has a slow attack. It somewhat works in unison mode, as it sounds like the voices are stacking but it doesn't have to proper tone. All voice / envelope chips work as well.. I really want to get this synth back to life if anyone can give me an idea of what to do to diagnose it I would greatly appreciate it. I would have tried more if I could find a legible circuit diagram but no cigar. I was thinking about making a video/audio recording soon as well.
Thanks,
Chris