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A nut behind the front Don't put R8 so close to R26 - D36/R47 too close Testing before powering up: Clock In - diode to U2-3 - Clock in socket with 80 contacts (40 each side), through-hole, http://www.4uconnector.com/online/object/4udrawing/10156.pdf 4UCON 10156 Card edge socket with amplifier to handle weaker (<6v) signals Clock out socket, with option to send to 16-pin cable when nothing is plugged into it. Manual one-step-forward via momentary push button. Play continuously or play.

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