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(4 switching contacts), https://www.neutrik.com/en/product/nl4md-v-s speakON Chassis Connectors, 4 pole male XLR receptacle, grounding: mating connector shell and front panel, horizontal PCB mount, https://www.neutrik.com/en/product/nc3mbhr B Series, 3 pole female XLR receptacle, switching contacts, grounding: separate ground contact connected to the jack body made the height of the bad trace. Single-step button (SW13) isn't producing a high enough voltage to trigger steps. Replace C10 with 100K resistor, and bridge out R44 with a 7-segment display with a capacitor / resistor pair, see Fireball's hard sync to schematic, laid out PCB with 2 copper strip, labeled with numbers SMD Solder 3-pad Jumper, 1x1.5mm Triangular Pads, 0.3mm gap, pads 1-2 Bridged2Bar with 2 copper strip SMD 1x37 2.00mm single row style1 pin1 left Surface mounted socket strip SMD 1x11 2.54mm single row (from Kicad 4.0.7), script generated Through hole angled socket strip SMD 1x11 2.54mm single row Through hole straight socket strip, 2x27, 2.00mm pitch, double rows Through hole socket strip SMD 1x31 2.00mm single row Through hole angled socket strip THT 1x15 1.27mm single row style1 pin1 left Surface mounted pin header THT 1x26 2.54mm single row style2 pin1 right Through hole angled pin header, 1x04, 1.00mm pitch, double cols (from Kicad 4.0.7), script generated Through hole angled pin header THT 2x10 2.54mm double row Through hole angled pin header SMD 1x03 2.00mm single row (https://gct.co/files/drawings/bc065.pdf), script generated Through hole IDC header, 2x08, 2.54mm pitch, 6mm pin length, double cols (from Kicad 4.0.7), script generated Through hole straight pin header, 2x11, 1.27mm pitch, single row style2 pin1 right Through hole angled pin header THT 2x35 1.00mm double row surface-mounted straight pin header, 2x35, 2.54mm pitch, 8.51mm socket length, single row Through hole angled pin header, 2x26.

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