Roland S-760 Rotary Encoder Replacement DIY

There are two ways to replace an S‑760 rotary encoder:
  • The Quick & Easy Method requires an inexpensive custom PCB, a new low‑cost rotary encoder, soldering, and the original wiring harness connector

  • The MacGyver Method requires a paperclip (yes... really!), soldering, a new low‑cost rotary encoder and the original Encoder Board w/wiring harness connector
S-50_S-550_ZONE At the bottom of this page is a diagram showing how to remove the S‑760 case and access the Encoder Board

The Quick & Easy Method

With a suggestion by Ray Bellis, I've designed a replacement encoder PCB. This new PCB uses the existing connector and wiring harness on the sampler. Simply solder the old encoder board wires and a new low‑cost replacement encoder onto this PCB and pop it in place. There's no cost markup or profit and OSHPark will ship it free to you if you are in the USA, Brazil, Europe, United Kingdom, Russia and beyond (Note: OSHPark sells a minimum of three PCB's at a time. The price works out to about $1 per PCB. A super bargain... especially if you own more than one S‑760 !!!)

          Installation instructions here

S-50_S-550_ZONE            S-50_S-550_ZONE

The MacGyver Method

These are instructions from the old method I used before creating the new PCB. It requires some un‑soldering/re‑soldering, extra wires and re‑using the existing encoder PCB and wiring connector harness. It's a lot of extra work but the price is minimal... Under $3 (USD).

  Bourns Encoder P/N: PEC11L-4225F-S0015
          Mouser P/N: 652-PEC11L4225FS0015
             Detents: 30
                 PPR: 15
         Output Type: QUADRATURE
            Channels: 2
        Shaft Length: 25mm (the original was 30mm)
               Price: $2.34 (USD)

                    Link Arrow Roland S-760 Rotary Encoder Replacement DIY   (PDF File)

Click The Image Below To Download DIY Instructions (PDF File)

Click The Image Above To Download DIY Instructions (PDF File)

S-50_S-550_ZONE     S-50_S-550_ZONE
Exploded View Of The Original Encoder (Switch - Wipers - Rotor)                           Replacement Encoder Prepared With New Wires For Placement

S-50_S-550_ZONE     S-50_S-550_ZONE     S-50_S-550_ZONE
New Encoder Mod Soldered Onto The Original Encoder Board

(Click Images To Enlarge)

S-760 Case Opening



Safety Precautions and Disclaimer
Modifications made to any factory stock equipment will always pose an element of risk. Sometimes mistakes are made which are irreversible. Improper soldering and handling of electricity can cause serious injury and damage the synthesizer. Use caution when handling static sensitive devices and the PCB. Make sure you are properly grounded, working on a static-free workbench or table and wearing eye protection during any soldering tasks. The author is not responsible for any damage or injury resulting from this DIY info. Use this DIY information at your own risk. And, I can't stress enough, the importance of wearing eye protection while soldering. That stuff flies everywhere sometimes!

The Information On This Page Is Current As Of