Question about Garmin GPSMAP 76 GPS Receiver
Occassionally my Garmin GPSmap 76 will suddenly shut down within minutes of my turning it on. The screen goes blank except for a thin verticle line. None of the keys work, not even the on/off key. I have found that if I remove a battery, then reinsert it, then turn on the unit in the normal manner again that it will come on. Often it will soon shut down again with the same blank screen and verticle line. However, sometimes it will work fine for many uses. I have checked the battery power when the unit is still working and it is strong. If not, I put in fresh batteries, but the strengh of the batteries does not seem to be the affecting factor.
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.
Posted on Oct 06, 2008
My problem exactly. Unit would start up, acquire satellites, then the screen would go blank with a single vertical line. Unit would not respond to buttons or even turn off. Unit works fine after I did the reset:
- w/unit OFF, press and hold QUIT+DOWN+MENU
- press and release the power button, release DOWN, keep holding QUIT+MENU for 5 seconds.
- unit prompts something like: "erase all data;" choose yes.
- you will lose waypoints, etc.
Go to the Garmin support area for details.
Search for: "How do I reset my gpsmap 76"
Posted on Oct 06, 2008
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Posted on Jan 02, 2017
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