Voice Prism Support

New

Hello, i have a Tc-Helicon Voice Prism Plus that is having an issue it has been stored for a good many years and when i turn it on it has power but the splash screen never changes from the intro message none of the knobs or effects work either, does anyone here no how to fix this issue or do the even still support or service this unit i have read about others that have the same issue with this same model, Is there a factory restore for this unit any ideas or advice would be apreciated