Question about Garmin nuvi 250W GPS Receiver

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When I turn my device on indoors, it won't pick up a signal. Also, I can be out in the car or in the plain open field and when powering up my device, it always seems to take a very, very, long time to finally find one and most of the time, I have to turn it off and back on again. Why is this and what can I do to fix the problem?

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I think the problem is in hardvare.I if it not see or very slowly hardly than there is harvare problems. First need to open the GPS and look at the GPS reciver conector cable. Is it correctly connected to the panel? If no than connect it. Close the case and test it. If yes than you need to delete from the SD card or in the internal memory the "SAVE" directory. There is the settings what the GPS is saving.When it deleted it could find SATELITES more faster (but if you do it you need to set the settings again). If still not working than go to a service. Or you can throw it into the thrass. Sorry 4 my english :)

Posted on Jun 07, 2010

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GPS needs to "see" the GPS satellites to work normally. When you are outside the GPS is capable of seeing those satellites. GPS works with something called triangulation principle to get a position fix. Simply put a GPS needs to see at least 3 satellites to work. Even when inside a car, the GPS sees 5 to 8 satellites (or more) at any given time through the windshield and windows. When you go inside a house, GPS would not be capable of seeing enough satellites. And on top of it GPS do not like it, when the SNR (signal to noise ratio) is not at an appropriate level. The program inside the GPS may be in such a way to reject those satellites to give you more accuracy. So GPS goes into a search loop to get more reliable satellites. It is best not to switch on a GPS inside a completely blocked out room. If you have to work on a GPS inside a room, place the GPS near a window and open the curtains. Also make sure there are no trees just outside those windows that completely block out the sky. Once you have acquired some satellites by keeping the GPS on for a few minutes outside in the open and switch it off before you go inside a room, next time onwards yours GPS should acquire a lock much faster.

Posted on May 03, 2010

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Posted on Jan 02, 2017

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To avoid personal injury and/or vehicle damage, refer to the service precautions at the beginning of this section.
General Information NOTE: For information on understanding electricity and troubleshooting electrical circuits, please refer to chassis electrical.
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