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The Poly-61 launched one-parameter-at-a-time data entry.
Three, 2-digit LED displays
are used to select program numbers, parameter numbers, and parameter values.
In this Repair Story, we tackle a unit that would only produce short, click-like
attack envelopes.
Attack and decay settings had no effect.
You'll see how to take apart the synth, troubleshoot the envelope circuits, and replace the bad parts.
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