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Question about Garmin GPSMAP 276C GPS Receiver

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No responce I was running my GPS in the boat connected to battery power, when I noticed the screen had gone blank and did not respond to any button commands. I have since checked the battery voltage and plugged it into the mains power with still no response. Any clues what I should be checking or does it sound terminal?

Posted by John Chatfield on

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Anonymous

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It might be that the screen has gone dark due to overheating (was unit in bright sunlight?). If you look carefully, the screen may still be on - but very dim. Go thru the menu until you get to display and try to reset it to a brighter state.

Posted on Sep 01, 2007

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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.

http://www.garmin.com/garmin/cms/site/us/support/searchsupport

Search for: "How do I reset my gpsmap 76"
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had same problem. the cause was corrosion in the boat wiring. the power wire was corroded 95%thru. there was enough voltage to start the unit but when the sounder kicks in the voltage dropped below minimum and the unit shut off. took a LOOOONG time to find.
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