A facility I am working with currently has a UVW-1800 Beta SP deck which was working extremely well the last time it was used, which was about a year ago. They would like to sell it now, but when I power the unit on, the unit clicks from the power supply as if a relay is attempting to activate. There are no status lights, only a clicking sound every half second or so. I removed the cover, but couldn't see any fuses or circuit breakers that could have been tripped. Has anyone had this happen before? Is it worthwhile to have this unit repaired only to sell it?