All my products are intended to be DIY with various techniques explained in detail. Occasionally, if you are located nearby to us in UK, I do offer a fitting service, please ask. This is intended to collect data and validate our guides.

If you need an upgrade fitting to an instrument, I have fitting partners that can do this for you to the highest standard. However, many synth restorers/repairers can easily perform this work as it is very well documented and tested. Visit our Restorers & Fitting Partners page for more information.

Enquiries & Pricing

Pricing does not include postage or transaction fees. Prices quoted via email are valid for 1 month. For a module or kit, tracked & signed 5 day shipping to customs facility is usually used:   Europe: 12 GBP,  USA/Canada: 18 GBP,  Israel: 19 GBP, Australia: 19 GBP. VFD modules are usually 2 GBP extra shipping.

We now have built up VFD module kits for JX10 and MKS70.  Can’t tell you how pleased I am to be able to continue to supply this beautiful display into 2025.

Please contact me by email for how to order.  I offer a personal and fully supported service, so prefer email to establish contact and make sure you have a successful install.

I am based in Hitchin, Hertfordshire, UK. For all enquiries and orders please email either of the two addresses below:

• contact@supersynthprojects.com
• superjxdisplay@gmail.com

Please tell us what country you are based.

Some people have an aggressive spam filter that prevents my replies getting through, if you have one of these, send your enquiry to both addresses please.

All the best, Guy Wilkinson

Roland Replacement Keyboard Flexible PCB

A keyboard repair kit for the Roland JD-800 that replaces the original flexible contact PCB with latest exotic technology. The improvements to the design allow the use of old contacts provided that they have been cleaned. See very detailed analysis and installation guides for this project in articles Roland Keyboard Failure Modes & Roland Keyboard Replacement PCB.

We can provide a soldered main board connector if you are able to identify what type of flexible circuit or white flat cable you have, see article Roland JD-800 Keyboard PCB Installation under heading “Identification”. We are unable to provide a new after touch connector, this has to be removed from the old transition PCB if you want after touch function to work.

Kit price with minimal/no soldering and perfect contacts for JD-800 is 160 GBP.

DIY set of parts to solder SMD diodes and connectors yourself for JD-800 is 110 GBP.

See stock list below for further lower cost options depending on availability.

A limited number of kits for U-20 and D-5 are available that cost 10 GBP extra on top of JD-800 kit price, contact me for availability. Other instruments, Rhodes 660, Rodgers C5xx/C6xx organs can be repaired using the U-20 kit. Contact us if you wish to purchase a kit for these, they are a variation of the U-20.

SuperJX Display Kits

For SuperJX displays, very detailed fitting guides are provided to make it as straightforward as possible and DIY options are available. Contact us for the guide prior to ordering.

All replacement displays work with original Roland firmware, however, Vecoven firmware upgrade is required to take advantage of the enhanced two line display features. All of the display related components are replaced by the new module. The notorious FIP coil, VFD, transistors, Micro-controller, Latch IC and capacitors are no longer required.

Very detailed instructions are provided for a straightforward installation, also includes techniques, recommendations and design rationale.

All kits require soldering and drilling skills.

JX10 VFD Module – 230 GBP

For stunning performance and eye candy whilst keeping the look and feel of the instrument within its original design intent. As well as bitmap fonts, it contains a feature to emulate the original starburst display using vector graphics known as anniversary code that can be turned on through the menu.

It is an assembly that is attached to the JX10 Display Board. Includes VFD and mounting screws. Replaces all display related components prone to failure: FIP coil, VFD, Microcontroller, Latch IC & capacitors.

JX10 OLED Module – 140 GBP

An OLED character display that is a great lower cost option than a replacement VFD. With Vecoven firmware and “GU280” support enabled, it presents the same enhanced information as the VFD version but in 40×2 character format, white on black for best contrast. Note that the illumination is not as competent as the VFD because the window on the SuperJX is geared for VFD and is designed for “hidden until lit”. If careful attention to cleaning the window is made, it still looks modern and sharp.

A single all in one assembly that is attached to the JX10 Display Board with mounting screws. Replaces all display related components prone to failure: FIP coil, VFD, Microcontroller, Latch IC & capacitors.

MKS70 VFD Kit – 240 GBP

The ultimate quality display experience that the SuperJX deserves. Uses a graphic VFD to emulate different layouts and fonts for the very best usability. The VFD is in keeping with the original design of the SuperJX. As well as bitmap fonts, it contains a feature to emulate the original starburst display using vector graphics known as anniversary code that can be turned on through the menu.

A full kit comprising of all cables and mounting hardware for the MKS70. The VFD attaches to the Display Board and a new PCB attaches to the casing using spacers. Replaces all display related components prone to failure: FIP coil, VFD, Microcontroller, Latch IC & capacitors.

MKS70 OLED Module – 140 GBP

A cost-effective module specially designed to adapt OLED to the MKS70. Straightforward fit with prepared wiring that minimises disassembly and soldering as much as possible.  Replaces all display related components that are prone to failure: FIP coil, VFD, Microcontroller, Latch IC & capacitors.

Note that the illumination is not as competent as VFD. This is because the window on the SuperJX is geared for VFD and is designed for “hidden until lit”. However OLED improves on LCD by having high contrast ensuring a clean display.

It is however, good performance and gives enhanced functionality that the Vecoven software exploits for VFD using just a 40 character by 2 line display. The very best results can be achieved by ensuring that the window is thoroughly cleaned to get rid of the “soft focus” effect. Like all other displays, works with original Roland software.

JX8P OLED Module – 140 GBP

An OLED character display that with Vecoven SuperJX Flash and “OLED DISPLAY” support enabled, it presents a 26 character x 2 line enhancement using a 40 x 2 display. Note that the illumination is not as competent as the VFD because the window is geared for VFD and is designed for “hidden until lit”. If careful attention to cleaning the window is made, it still looks modern and sharp.

A single all in one assembly that is attached to the Switch Board 1 with mounting screws. Replaces all display related components: FIP coil, VFD, Microcontroller, Latch IC & capacitors.

Options & DIY

SuperJX / JX8P Power Supply Bare PCB – 37 GBP

A bare PCB for building the replacement SuperJX Power Supply.

Display PCB – 80 GBP 

The Display PCB is now available on it’s own so you can buy your own VFD panel and solder it yourself. This is professionally assembled by our PCB fabricator.

VFD Power Brick

For users that want to significantly reduce power supply current when using a VFD kit, a blank PCB is available to allow conversion of mains to low voltage for the display PCB. The installation guide shows the two additional components that are needed to build it.

Price List & Stock

Stock in table below shows availability for items ready to ship next day. We have parts for everything below including OLED kits and they are built to order.

Description	Price GBP	Current Stock
JX8P OLED Module – 26×2 useable character display on PCB with fitted mounting pins & screws. Same design as JX10 OLED with different hardware.	140	Made to order: 2 day lead time
JX10 OLED Module – 40×2 character display on PCB with fitted mounting pins & screws	140	4
JX10 VFD Module – Noritake GU280 on PCB with fitted mounting pins & screws	230	4
MKS70 OLED Module – 40×2 character display & hardware	140	7
MKS70 VFD Kit – Noritake GU280, Display PCB, cable & hardware	240	3
Replacement SuperJX & JX8P Power bare PCB. Supports JX8P.	37	4
OLED module 40×2 character for retrofit into JD-800, DX5, DX7IIFD, D550, D50 or Korg M1. Also recently tested in upgraded Korg DSS1. This requires confidence, electronic knowledge and soldering skills to fit. This display is tested and validated for compatibility. This is not a Winstar display and is same specially made one used in JX10/8P OLED kit.For Korg M1 an adaptor header/PCB is required, 1 GBP extra.	74	4
Cartridge Cable Adaptor Blank PCB for JX10.	17	9
Power Brick blank PCB for powering VFD module.	5	2
Keyboard Repair Kit Options
Roland JD-800 Keyboard Repair Kit consisting of Flexible PCB, transition board & label. Perfect contacts.	160	6
Roland JD-800 Keyboard Repair Kit consisting of Flexible PCB, transition board & label. Offset FPC, use guide arrow.This price for perfect contacts is extremely good value for money and only needs a little care when connecting up.	110	2
Roland JD-800 Keyboard Repair Kit, DIY set of parts to solder SMD diodes & connectors yourself. Perfect contacts.	120	10
Roland U-20 Keyboard Repair Kit consisting of Flexible PCB, transition board, screws, spacers, cables & label.Note above JD low cost options available for U-20 too	170	10

Based in UK

We are based in Hitchin, Hertfordshire, UK. Any small amounts of money made, is used to fund the next project and keep these classic music synthesizers alive.

Items ordered are all sourced and custom made to order, in very low volume. For the very best reliability, all parts are brand new from approved distributors where they can be traced back to original manufacturers. We can supply a receipt on request (non VAT, Sole Trader only).

Printed Circuit Boards all have traces of non corrosive flux present as part of a “no clean” process. Cleaning is avoided so that coating is not damaged on SMD components that would otherwise make them vulnerable to moisture.

VAT is not charged on these prices, but VAT and fees has to be paid if imported into your country.

Copyright © 2023 Super Synth Projects, Guy Wilkinson