Question about Garmin StreetPilot C330 GPS Receiver

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310 c garmin gps on boat not working

Good morning,
my garmin 310 c gps system on my boat turns on and the map shows up, the boat symbol has up with a red question mark on it. the gps system do not show where i am going nor can i put in a point to go to, also at the same time the red question mark problem started the depth finder on the gps quite working.
thanks in advance for your help
stephen
ps could not find the garmin 310 c on your list

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The red question mark indicates a failure to communicate with a locating satellite. If you are transiting or in an area where you know you have adequate coverage the likely problem is in the wiring and connections between your GPS antenna and the 310c head unit itself. A common problem is the connector bus itself on the back of your screen. Often it is exposed to salt water and humid conditions and the terminals corrode. I use a dielectric grease and fill the female connector pin holes to aviod this and ensure good connectivity. Another quick test is to reboot your head unit by powering off and back on. Its possible you are merely dropping signal and the unit needs to reaquire the broadcast. If you still have no joy its time to take it to the marine electronics tech and get it looked at. Garmin is making some great new products and it might just be time to upgrade anyways! Best of luck.

Posted on Jul 25, 2012

Hi, 673king, My Garmin is c330, but I think that all GPS's of this nature are programmed only for roads -- not bodies of water. I haven't updated my 2-yr.-old-Garmin yet for new maps, but what you describe concerning the red question mark is exactly what I get when I am on a road that was constructed after my Garmin was programmed. Since the GPS can't find the road in its memory, it merely has a red question mark until I get onto a road that the software recognizes. It then operates as usual.

Posted on Aug 10, 2008

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