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Hi! You will need to reset the unit to work normally. Try this, remove the battery and press/turn the power button for 10secs. while the battery is removed. Put in the battery and turn the unit on and see how it goes. This should reset the system and resolve the problem. Hope this helps and have a good one!
I had a similar problem and did solve it with the soft reset (pressing reset button). I have a One XL and there is a small reset button that you push with a paper clip. On the XL 330 you press and hold the on/off button for 15 seconds and the unit should reset.
My symptoms: Would not find a GPS signal. When I looked at the GPS Satellite status (press on the GPS signal strength bars, again on the GPS/battery status) you can see it locking on up to 8 satellites but would still not show a gps signal lock. Normally it only takes 4 satellites to get a gps lock. My other sympton was that when I attached the GPS unit to the computer and operated it with TomTom Home, it worked fine and locked on to the gps signal quickly (even inside my home). But it would never (at least for 30 minute trips) lock on to a gps signal. After doing a reset it began working normally and locked on to a gps signal after finding 4 or more satellite signals.
Accordingto Garmin, this problem can be fixed by disabling the WAAS feature in teh set up menu. There is an incompatibility between the old Garmin software and latest WAAS upgrades. Later software from Garmin is supposed to fix this problem.
Firmware needs to be upgraded on these units because the atellites are changing every so often so does the programming in these units, check to see if there is a firmware upgrade to fix these problems, the line in the middle of the screen is because it either hung during the process or the units lcd is going bad.
I had the same issue with the only difference that I haven't replaced the battery yet. When my unit can't locate or acquire satellites I change between GPS and WAAS mode. Within 45 seconds my unit successfully locates satellite. After some time if I disconnect unit I might have to switch it back to GPS and so on, and so on, and so on. It worked for me for past 3 months... Hope it will help you...
Disable the WAAS on your unit. A new satellite was launched earlier this year and is causing a problem. This is why Garmin issued a new software update version 3.9. Menu > Setup > System... scroll down to WAAS and disable it. This should get your unit working again but with less accuracy.
Update the software to version 3.9 and leave for about 20 minutes in open area (clear view of sky) so your unit can download the full almanac. This should permanently fix your problem. Once you finish upgrading, go back and enable the WAAS.
to mhotz: You can purchase serial2USB connectors at a computer store. You will have to install the drivers which come with it before it will work. That should solve your upgrade problem.
of which GPS unit you use, finding sufficient satellites can be
difficult if you are working in an area with trees/mountains/hills or
other obstacles. Here are some suggestions to locking onto satellites:
1.) Mission Planning. If you think you're going to be working in a tricky area, but sure to check mission planning. This software allows you to input a location and obstacles, and gives you the times when satellites will be best.
2.) Wait. It takes the GPS units varying amounts of time to "find" satellites, but if satellites are visible, the unit should lock on within 5 minutes.
3.) Move. If possible, move into an area that has a clearer view of the sky.
4.) Face south. This is especially important if you are using the GeoXT. Turn the GPS antenna so that it is facing the southern sky. The majority of satellites have their orbit so that they appear in our southern sky. There are also satellites in the east and west, and almost no satellites to the north.
5.) Rotate around. If facing south doesn't work, slowly rotate the GPS around 360 degrees.
I have run into the same problem and it may be related to the WAAS (Wide Area Augmentation System) feature. Try disabling this feature (under MAIN MENU / Setup). I used this receiver overseas (Asia and Europe) last year for 35 days straight with no problems. During this time WAAS was disabled as none of these satellites are visible overseas. The problem occurred intermittently prior to the overseas trip, and has reoccurred after returning. I was running into the same problem this past weekend and noticed the screen blanking out (with the vertical line) shortly after differential corrections were applied to the GPS signals. I disabled the WAAS and let the receiver run for over an hour. The problem did not return. Hope this helps.
I had the same problem and contacted Garmin. This is being caused by a software issue that started when the government updated the software in their WAAS satellites. The Garmin website will give you instructions on how to correct this but I have listed them below:
Power on unit
Press enter to get past the I Agree screen
Now you should be on the satellite page, press the menu button one time
Highlight WAAS off and press enter
By doing this, the unit should not shut down.
I followed these instructions and my 168 Sounder is working fine.