When I power up my Edge 305, the "Acquiring Satellites" screen doesn't show any signal bars, it just shows the four compass points. I have tried a hard reset and left the devise outside while in the above mode for about one hour, but to no avail. The Garmin support website offers virtually no support, and live support is not open on the weekends.
I had the same problem. With unit off, press upper left corner of screen firmly and hold while using another finger to press the "power" button. This will cause device to boot up in the "maintenance mode". I usually hold screen pressure until I see satellite icons appear. This may not be necessary.
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If after reading the above article your unit is still having problems, please ensure that your unit's software is up to date. You can do this by using our WebUpdater® program.
If you have tried all of the above suggestions and your unit is still not acquiring satellites, you can perform a master reset by doing the following: Note: A master reset will erase all waypoints or favorites and will restore your unit to the default factory settings.
Start with the unit powered OFF and unplugged from power.
Touch and hold the bottom right corner of the touchscreen.
Power the unit ON and continue pressing the screen until a new message displays, "Do You Really Want To Erase All User Data?".
Touch Yes and go through the set up again.
Take the unit outside and let it set with a clear view of the sky for 3-5 minutes to acquire satellites. If the unit still does not acquire satellites after this, please contact Garmin Product Support.
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As GPS units are used, data is gathered which
helps them acquire satellites quickly at the start of each use. If a device is
used daily it should be able to acquire satellites in a minute or less. Using a
GPS device while it is outdoors with a clear view of the entire sky is the
ideal condition for acquiring satellites. Please know that there can be several
different factors that may cause a GPS unit to not acquire satellites:
If your unit is trying
to acquire satellites for the first time, it may take longer than normal
to establish an initial position. If the unit is powered on and outdoors
with a clear view of the sky this should not take more than 3-5 minutes.
If your unit has not
been used for an extended period of time (more then a month), it may take
3-5 minutes to acquire satellites.
If your unit is indoors,
it may not acquire satellites. Even standing next to a window indoors will
block a majority of the sky which is needed for a device to locate and
lock onto a satellite signal.
If you have just
finished updating the software in your unit or you have performed a master
reset, your unit may take 3-5 minutes to acquire while outdoors as the
data that is used to locate satellites may have been erased.
If your unit has
traveled over 500 miles while turned off or not tracking your travel, it
may take 3-5 minutes to acquire even in ideal conditions.
If your vehicle has a
protective coating on its windshield or electronic devices which interfere
with the unit receiving signal, your unit may need an external antenna* in
order to acquire satellites.
If you suspect this to
be an issue, try taking the unit outside of the vehicle with a clear view
of the sky for 3-5 minutes so that the unit can acquire satellites. If
your unit loses satellites once moved back into your vehicle you will
most likely need an external antenna*.
If your unit is still having trouble acquiring
satellites, please ensure that it has the latest version of operating software
by using our WebUpdater program. Once
your unit is updated please allow the unit to acquire satellites outdoors in a
stationary position with a clear view of the sky.
This will sound absurd, but I have had 100% success with the following "fix" for 3 months now: drop the unit on a table from a height of 10 to 12 inches and then power up. It acquires every time! I have reloaded firmware, reset, everything and this problem persists. I do not get satellites about 9 out of 10 times I power up. Then I drop it and try again and I always get them. I think it's a cracked circuit board? I waited 3 months before posting this to rule out coincidence. If this method is a coincidence, then it is an amazing one that repeats over and over again!
I experienced the same problem about acquiring satellite signal even when it's a clear sunny day. After 30 mintues, it was still searching!
The unit appeared to have "stuck" in this acquiring mode. The following worked for me:
1) open the GPS antenna
2) press the bottom left screen while holding the power button to turn the unit on
3) enter maintenace mode
4) select diagnostics
5) clear error report, do NOT clear any user data
6) restart unit the usual way
My GPS 350 was able to acquire satellite signal in less than 1 minute after the above steps were taken.