UPDATES: March 2017
U-220 Power Switch Replacement - Part Numbers, Pics, Repair Tips and Vendor Info
"Roland U-20, U-220, & U-110 Facebook Group" Link Added - Closed group discussions for U-Series synths
Boring Red LED's Replaced - Color coded LED's make visual ID easier - Blue/Green/Red/Orange/UV/Yellow
UPDATES: October 2016
Spare Parts Cross Reference Chart - The SEARCH is on!
UPDATES: July 2016
SysEx File Verification Utility v1.(1b) - Great utility for synth/sampler SysEx file matching
UPDATES: March 2016
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
UPDATES: October 2015
U-20 Control Jack Templates - Allows easy access to Audio Ports and Control Jacks on the back of the synth
UPDATES: August 2015
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
U-110 Factory Presets - This SysEx Patch file is included for U-110 Patch editors and coding apps
UPDATES: July 2015
SN-U110 PCM Card Sound Charts - High resolution scans of all fifteen SN-U110 PCM Card original inserts
Keyboard Report - Keyboard Magazine in-depth review of the D-70, the U-20's big brother / August 1990
Test Procedures - U-20/U-110/U-220, D-70, Rhodes Model 660/760 battery tests and images
UPDATES: April 2015
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
UPDATES: March 2015
New U-20 Homepage Goes Live!