Question about Garmin GPS 72 GPS Receiver

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Screen Blanks Garmin GPS 72After 30 minutes using a 12v adapter The screen blanks. A single vertical black line remains. It will not restart until the batteries are re-installed.Garmin sent me a new 12V adapter. It did not fix the problem.

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Re: Screen Blanks

New software is out 2.50 will fix problem with waas.

Posted on May 27, 2008

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Re: Screen Blanks

Contacted Garmin Tech Support and they verified the problem with the WAAS. They said the engineers were looking at the problem. Estimated the fix would be ready in 2 to 3 months. I turned the unit on inside where the unit could not receive any satellites then disabled the WAAS and the unit works without problems. It is just not as accurate.

Posted on Feb 12, 2008

Re: Screen Blanks

The freeze and the line (blueish in my case) is, per Garmin, caused by the incompatibillity of the WAAS software with the signal generated by the satellites. Sounds like the DOD made some changes and Garmin has not patched THEIR software to work with the new situation.

Posted on Apr 30, 2008

Re: Screen Blanks

I emailed Garmin. There is a problem with the software when using WAAS. Until they release a software update, you need to disable WAAS.

Posted on Nov 19, 2007

Re: Screen Blanks

Same thing. Page blanks after a few minutes of use, single vertical black line. Have to re-install batteries to reset. Several times this happened, I was using the zoom feature. Now I try not to zoom.

Posted on Oct 22, 2007

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Does the screen go blank with a faint vertical line (top to bottom)? If so, I had the same problem (blank screen, vertical line). After speaking with Garmin, I was told to make sure I was using the latest software version, and to turn off the WAAS function. Disable it for now, because the WAAS signal, coming from the satellite, has changed, and Garmin has not yet published a remedy to correct this problem. A fix should be out in a software update, sometime in the future, hopefully. I also did the software update, to the latest version 4.0. The unit performs perfectly now, however, the accuracy is not quite as good, due to the lack of WAAS. Good Luck!!

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Garmin gpsmap 162 turns on, works for about two minutes, then a thin black vertical line comes across screen and screen goes blank with the line remaining. I have to unplug and start over. Same things...

Possible Solution found on google....

My old Garmin 162 chartplotter was mounted on the binnacle guard and served me
well for many years. Lately, it started getting very slow to refresh screens.
At times, it would shut down with only a black vertical line on the screen. On
our last cruise, the screen froze at a very critical moment. Too old to
repair, I bought a new Garmin 440, which I am very disappointed with, but
that's another story.
I read an article in the GoodOldBoat newsletter about the Department of Defense
making changes to the WAAS satellites that have caused problems in Garmin 72
and 76. Garmin's tech support recommended to turn the WAAS function off on
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up on my truck and drove around. Not a problem. Further reading indicates
that other brands of GPS are also having problems with the new WAAS
So if you are having problems with your GPS and it is new enough to have WAAS,
try to turn it off

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2 Answers

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Call Garmin tech support with any questions or to find out about the software patch, 1-800-800-1020

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