UPDATES ARCHIVE
June 2025
INFO
U-220 2-Prong Power Cable To 3-Prong Power Cable DIY ‑ A super easy and low cost mod. Get grounded!!!
INFO
U-20 2-Prong Power Cable To 3-Prong Power Cable DIY ‑ A relatively easy and low cost mod. Get grounded!!!
INFO
U-110 2-Prong Power Cable To 3-Prong Power Cable DIY ‑ A "Not-So-Easy" but low cost mod. Get grounded!!!
February 2024
UTILITIES / REFERENCE
D‑70 Review From Electronic Musician Magazine ‑ An in‑depth review of the D‑70, the U‑20's big brother / September 1990
January 2023
INFO
U‑20 Keyboard Repair - "Space‑age" polyiamide flexi‑PCB replacement + aftertouch fix now available
Individual MIDI Channels - How to set MIDI channels for individual parts on the U‑20 and U‑220
FIXED/VARIABLE Micro Slide Switch - Description and instructions for using that weird switch on the U‑220
Custom 16‑Bank RAM Card - An amazing DIY multi‑bank RAM card for the U‑20 (and other Roland synths
UTILITIES / REFERENCE
U‑110 Parameter Tree Structure - A higher quality scan of Page 42 from the "U‑110 Owner's Manual"
October 2022
UTILITIES / REFERENCE
U‑20 / U‑220 Patch Reader v2.3 ‑ A major update adds Patch + Timbre name displays for the U‑20 and U‑220
September 2021
INFO
Video Review Of The U‑20 and U‑110 - Why these Rompler's were so popular in the 1990's
October 2020
UTILITIES / REFERENCE
Original U‑220 Factory Patch Breakdown (Fork) - 300 DPI scan of the 16‑page booklet included with every new U‑220
August 2020
UTILITIES / REFERENCE
Original U‑20 Sound Patch/Timbre Chart - 600 DPI high resolution scan of the Preset/Timbre laminated card
November 2019
UTILITIES / REFERENCE
U‑20 Reference Cards v.2019‑11‑14 - 8 New pages added to this 'quick‑look' guide
May 2018
INFO
The Final U‑20 Firmware (v3.03) Is Now Available For Downloading
September 2017
UTILITIES / REFERENCE
Roland Service Bulletin For The U‑20 MASK ROM - Installation instructions for this weirdo ROM chip
U-Series Vector Artwork - Logos and Buttons to spice up your webpages and documentation
INFO
U‑110 Firmware (v2.03) Is Now Available For Downloading
March 2017
INFO
U‑220 Power Switch Replacement - Part Numbers, Pics, Repair Tips and Vendor Info
Boring Red LED's Replaced - Color coded LED's make visual ID easier - Blue/Green/Red/Orange/UV/Yellow
"Roland U‑20, U‑220, & U‑110 Facebook Group" Link Added - Closed group discussions for U‑Series synths
October 2016
UTILITIES / REFERENCE
Spare Parts Cross Reference Chart - The SEARCH is on!
July 2016
UTILITIES / REFERENCE
SysEx File Verification Utility v1.(1b) - Great utility for synth/sampler SysEx file matching
March 2016
INFO
Power Switch Replacements For U‑20 - Comparisons, Recommendations, Part Numbers and Specs
EV‑5 Polarity Switch DIY - Schematic for modifying an EV‑5 to work with non-Roland gear
October 2015
UTILITIES / REFERENCE
U‑20 Control Jack Templates - Allows easy access to Audio Ports and Control Jacks on the back of the synth
U‑20 Patch Reader v1.0 ‑ Patch name display utility for listing U‑20 info. Works with any browser so there's no software to install
August 2015
INFO
LCD Garbage Display Characters? - Don't despair... It's usually an easy fix
How To Turn Active Sensing Off - A MIDI pulse over the wire every 300ms? No Thanks!
Red Epoxy Syndrome - The red glue problem and how to fix it
U‑20 Main Circuit Board Replacement - Swapping out a v2.00 ROM PCB with a v3.03 ROM PCB
U‑110 And U‑220 Support Added - Specs, Tweaks, Images and Factory Resets
PATCHES
U‑110 Factory Presets - This SysEx Patch file is included for U‑110 Patch editors and coding apps
July 2015
INFO
SN‑U110 PCM Card Sound Charts - High resolution scans of all fifteen SN‑U110 PCM Card original inserts
UTILITIES / REFERENCE
D‑70 Review From Keyboard Magazine - "Keyboard Report" column in‑depth review of the D‑70, the U‑20's big brother / August 1990
BATTERY REPLACEMENT
Test Procedures - U‑20/U‑110/U‑220, D‑70, Rhodes Model 660/760 battery tests and images
April 2015
UTILITIES / REFERENCE
U‑20 Reference Cards v.2015‑04‑03 - Commonly used menu items all in a 'quick‑look' guide
User Tips - "Effective Memory Allocation For The Roland U‑20"
Magazine Ad - U‑20 full page advert from 1990
Keyboard Report - Keyboard Magazine in‑depth review of the U‑20 / January 1990
March 2015
New U‑20 Homepage Goes Live!
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