Question about Garmin GPSMAP 172C GPS Receiver

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Display won't come up anymore

I have used my Garmin GPSMap 172C for a few months now. The display starting getting weak on my boat. Today I plugged it to my AC converter and adapter at home. The keys light up but the display is completely dark. What should I do?
Thanks for the help

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  • newcal Jun 16, 2008

    Man, you are absolutely right!.....I had inadvertently changed the luminosity with the off button!

    Thanks a mil.....avoided me a ton of hassle.

    Newcal

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  • 174 Answers

The power switch usually allows you to adjust the backlight with a short tap there should be a scroll bar, use the four way toggle up to increase the back light.

Posted on Jun 16, 2008

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1 Answer

How to degausse gpsmap 172 gps


Hi Donnie,

Degaussing is not something that ever needs to be done on this device.

Degaussing is a term that I learned many years ago - it was a process performed periodically on early CRT (cathode ray tube) displays (such as a TV). Over time, CRT displays would build up magnetic charges that would cause the image to become distorted. A degaussing wand would be connected to an AC outlet and then brought very close to the display and gradually withdrawn. This would neutralize the magnetic charges on the display - and the resulting distortion. Years later, manufacturers incorporated a degaussing coil inside the display's cabinet that did the same job as the degaussing wand - thereby making the wand obsolete.

The GPSMap 172 has an LCD display that requires an electrical charge to create an image on the display. Unlike a traditional CRT type displays, an LCD (or LED for that matter) display is unaffected by magnets / magentism. Hold a magnet near a non-CRT type display to see for yourself. A magnet held near a CRT display however will distort the image more as it gets closer to the display. Caution: Doing this may cause PERMANENT damage to the CRT display. This is why many home theater speaker systems touted that fact that they were "magnetically shielded" so that they would not distort the images on the CRT display.

I hope this helps!

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1 Answer

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Jul 12, 2010 | Garmin GPSMAP 172C GPS Receiver

1 Answer

My screen went black. Worked the night before.


hi..
when the unit is on try to press and hold the reset button for 10 seconds and then release if this will not work charge the unit for 3 to 4 hours using a wall adapter and if still not work try to check if there is a latest firmware update for the gps then download it.

thank u
rate me!!

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I have the Sounder 178C. It will only work with 128 Mb Cards (or smaller). It does not work with the 256Mb Cards - says "Reading Card" forever.

Per Gramin, I had to buy the 128 Mb card and DVD map update. Then program the card with a USB data programmer to make it work.

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1 Answer

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i have the same problem. i just read that it maybe a software rather than a hardware problem. updating the firmware will "Fix bug on Data Card Information page to prevent unit shutdown"

http://www8.garmin.com/support/download_details.jsp?id=431

...trying to locate a pc interface cable to install...

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1 Answer

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Mar 10, 2009 | Garmin GPSMAP 172C GPS Receiver

1 Answer

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you need to go outside in an open area with no trees around and turn the garmin on untill it receives a sat connection it can take several minutes for it to find it

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2 Answers

172 will not work after dropping


Hi,
Have you solved the problem?
If not you shall check that the flexible cable to the screen is securely connected to the circuit board. Check also the other cables.
BR
SHALL@tdc.dk

Oct 21, 2007 | Garmin GPSMAP 172 GPS Receiver

1 Answer

Depth display


reset your factory settings!

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