M-200i: What is the Recommended Power Supply?
Be sure that a Roland PSB-14U power supply only is being used with the M-200i--3rd party power supplies can cause the unit to not operate properly.
A new PSB-14U power supply can be purchased through a local reseller:
Or directly from our parts department at (604) 270 6626. They are available Monday through Friday between the hours of 8:00am and 4:00pm Pacific Standard time.