Question about Garmin GPSMAP 198C GPS Receiver
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Posted on Jan 02, 2017
SOURCE: No power
Could be worth a look at the connector on the back of the unit itself. As I discovered a few weeks back, they aren't as saltwater resistant as the IP67 rating would lead you to expect. Compare the pins in the plug with the diagram on page 99 of your manual (also downloadable from http://www8.garmin.com/manuals/GPSMAP198CSounder_OwnersManual.pdf) and make sure all the pins that are supposed to be there actually are. In particular, make sure pin 15 is in a decent state. This one carries power to the unit, but will act as a sacrificial anode in the presence of saltwater, and can rapidly corrode to oblivion. If this is what has happened, you have a bit of a problem, because Garmin, don't appear to be very good at making spares available. I was lucky in that the GPS I was fixing was a lower end model that only used five of the seven pins in its connector, so I was able to rewire to provide a supply through the unused pins. The diagram suggests that the 198C also sports a few unused pins, so you may well be in luck. A.
Posted on Apr 14, 2007
A Garmin Nuvi 1300 that won't start, freezes on 'loading maps,' or is
acting erratically is symptomatic of having corrupt
To correct this, I recommend backing up your favorites, clearing all user data, and if it still is stuck, then updating your Nuvi firmware.
Follow these three steps to take to get your Garmin Nuvi 1300 running like new:
I hope that helps.
Garmin Nuvi 1300 Manual Download
Garmin Nuvi 1300 QuickStart Download
Garmin Nuvi 1300 Favorites Backup
Garmin Nuvi 1300 Hard Reset
Garmin Nuvi 1300 Webupdate
Posted on May 27, 2010
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
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