My YAMAHA PSR S950 pitch bend is broken, and it got 10k potentiometer inside. Everything I got here is some joystick, and Arduino (if that helps).

Finding exact size 10k potentiometer is not going to help, as everyone sells them for $50 here.


According to the service manual, the potentiometer is connected between the signals called +5DA and AVSS:


simulate this circuit – Schematic created using CircuitLab

Replacing the 10k potentiometer with a 5k just means that it will draw a constant 0.5 mA more current, which will not be any problem what so ever. +5DA is connected straight through to the main VDD, so it can definitely handle it.

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  • \$\begingroup\$ so, that means I need to put 5k resistor on my data pin on my joystick? \$\endgroup\$ – Rinaldo Jonathan Jul 30 '17 at 14:59
  • \$\begingroup\$ no , unless it is too sensitive. \$\endgroup\$ – Tony Stewart Sunnyskyguy EE75 Jul 30 '17 at 16:16
  • 2
    \$\begingroup\$ According to the service manual the pitch bend pot is connected from +5V to Ground and its wiper simply goes to an ADC input on the MCU, so you don't need to add any resistors. \$\endgroup\$ – Bruce Abbott Jul 30 '17 at 20:11
  • \$\begingroup\$ @BruceAbbott Awesome find, I updated the answer with new info \$\endgroup\$ – pipe Jul 30 '17 at 22:13

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