Has anyone had this issue come up? I've got a C80, radar, and Airmar depth sounder. Temp is way off and has been since I got the boat last year, but I'm not concerned with that. Coming back from the beach today (5 mile cruise), DSM Connection Lost error came up at least 10 times....VERY annoying to say the least.
Raymarine is replacing all made in mexico DSM 300s for free. All you have to do is mail it in with a letter. The DSM Connection Lost error is due to some lack of noise immunity which seems to be fixed in the later made in Hungary units.