Contact DMI
The Datamarine 5000 is a really great unit and was way ahead of it's time. DMI took over all or most of what Datamarine had and they're located on Cape Cod.What I have for points of contact are:(425) 771-2182 service@sea-dmi.com debbieV@sea-dmi.com [May and June 2002](800) 597-2421 9AM to 4PMMain phone number: (508) 564-7491dmifix@dmimarine.com They’ve been doing repair work on Datamarine from 1996 on.http://www.dmimarine.com/FAX (508) 564-7497DMI bought by Simrad Jan 2004: http://www.simrad.com/If nobody else has an idea of what to do maybe they can help you on this.