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george123

Not sure if this belongs on the MFD or instrument forum.

Four years ago I installed a system that has the following; Furuno NavNet3D display, Simrad AC42/AP28 autopilot, WSO100 weather station, DST800 transducer, two NMEA2000 GPS antennas. The system worked great for 3 1/2 years. Six months ago I installed the a75 (software v16.47) display connected to the NMEA2000 backbone. The boat has not been used that much during the past six months. The a75 displayed all the NMEA2000 data that was on the buss. Four weeks ago something strange started to happen and that was randomly the NMEA buss would crash and all the data on the buss would be gone. The system crash would happen 20-40 minutes after the system was up a running. The DST800 would report correct information when everything was running. I started to trouble shoot the system and when I removed the DST800 from the buss the data for the other devices that were on the system would come back. So I concluded that I had a bad DST800. I have sent this back to airmar for evaluation and they have told me that the DST800 is fine. The only new device o the nmea2000 buss is the a75. Have you seen anything like this related to the a75