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Vintage Synths (pre-1990) • fixing a sequential circuits pro one

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Hello all,

first post here. Thanks for letting me join! I'm working on a Sequential Circuits Pro One. My octave switches on the 2 oscillators are way out of whack. not sure what interval they are making but it sure isn't an octave! I tested the CV output jack to see what was going on with the DAC. I get around .02 VDC no matter what note I hit (I thought the voltage was supposed to double as I go up in octaves) I noticed there was a bunch of gross goo on the DAC trimmer that I removed but I haven't tried messing with the trim. It seems that if the voltage is staying the same, it wouldn't be an issue with adjustment but with the DAC itself. Should I buy a replacement DAC?

thanks

Statistics: Posted by Adam8179 — Wed Feb 12, 2025 4:06 pm — Replies 0 — Views 14



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