Many apparent hardware problems can actually be software-related. A factory reset restores all settings to their original state and can fix issues ranging from stuck parameters to erratic behavior. To perform a factory reset on the Juno-Di:
When service manual work reveals a need for replacement components, several sources exist: roland juno di service manual work
Preventive maintenance is the best approach for keybed longevity. Covering the synth when not in use and avoiding smoke exposure can significantly extend the life of the key contacts and other sensitive components. roland juno di service manual work