My
Garmin GPSMAP 172C, external
antenna, wired to DC box on
Catalina 27. The system is below
deck and has never been exposed to
water splash.
I
power it up, it turns on, searches and finds satellites, and then when it loads the Data Card, it will completely shut down. When I
power up again, it will repeat the same process.
Any ideas - Amp fuse, grounding, chart card, internal problem...?
Thanks for any ideas.
jJ