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?

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Re: No responce

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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Premature power down.

Check for loose or corroded power connections.

Jul 12, 2013 | Lowrance LCX-113C HD GPS Receiver

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White lines running thru screen. Can't get back to off. No responce

Hold the power button until the GPS reboots itself then change your settings back to how you had them, you will need to connect to your computer to get back all your POI's.

Jun 26, 2011 | Tomtom GPS Devices

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Unit shut down

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.

Sep 25, 2008 | Garmin GPSMAP 76 GPS Receiver

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With the charts page up, start by hitting the find ship softkey at the bottom of the screen.If that find the boat on the chart all is good.If not you need to check you have a GPS fix. Go to GPS screen and see you are seeing satalites.
If all is good when you hit find ship and the boat disappears again from chart while underway you will need to go into the chart setup menu and see if the screen amplifier is turned off. If off turn on.This is first place to start. Hope that helps

Jul 13, 2008 | Raymarine A65 Combo GPS...

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GPS screen went blank

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"

Oct 06, 2007 | Garmin GPSMAP 76 GPS Receiver

2 Answers

Powerin up - screen goes blank after a few swconds -

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.

Nov 15, 2006 | Lowrance LCX-19C GPS Receiver

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