This equipment is no longer manufactured. However, since it is one of the most powerful devices for control of Kodak Ektagraphic slide projectors considerable effort and expense has been devoted to repairing and maintaining the various units. Schematics and parts for all models and versions are not available. It is very possible that malfunctioning Composer 301, Maestro dissolve units or Opus computer boards can be repaired. It may take two or more months to obtain an estimate of the cost for repairs. A $100 fee is requested to help pay an engineer for a diagnosis. No repairs will be completed or charged without permission. If you have a Multivision unit that is no longer in use we may be interested in purchasing it for parts. Some of the instruction manuals are available for the cost of copying and mailing. Eventually we hope to put PDF files of the instruction manuals online. We are interested in compiling a database of Multivision users for historical artistic interest and for mutual support. If you are a user or owner of Multivision equipment please email us. Contact Larry@SaintRubidium.com for more information. Call (415) 999-4758 if is a dire emergency.