Question about Garmin GPS 48 GPS Receiver

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GPS 48 MEMORY LOSE

WHEN I TURN ON MY GPS 48 I GET A MESSAGE : STORED DATA WAS LOST MEMORY BATTERY IS LOW SEARCHING THE SKY.
HOW DO I REPLACE THE MEMORY BATTERY.

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You can go to batteries plus or wherever and buy a new 3 volt battery for it. You will have to unsoder the old one and soder the new one back in. Original was a VL1220, I replaced with a Dantona Lith 1-2VLS
http://shop.industrialpartner.com/D/dantona/lith-1-2vls.htm
http://www.fedcobattery.com/b.cfm/all-vendor/lithium-coin/Rechargeable-Lithium-Coin-Cell-for-Printed-Circuit-Mount_VL1220-1VC.htm

Posted on Oct 09, 2008

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Tomtom go720 cant find gps


any number of resons for this. here are a few

Battery is too low to recive a signal
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Battery needs replacing
poor view of the sky
Too far back from windscreen
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First though Take off the faceplate ( using a credit card or similar) locate the reset hole and reset it to factory. Your saved data will be lost ( previous trips data and any skins applied) it may recover and reconnect for you. But charge the battery properly on an AC charger or via the USB.

Please rate my help++++Thanks for using FIXYA

Oct 20, 2009 | Tomtom Go Plus GPS Receiver

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The Lithium back-up battery is very low.How can it be replaced ?


UNFORTINATELY the message was not complete verty what? low? try recharging it or replacing it before it does damage by leaking into thre circuit board

Jul 20, 2009 | Garmin GPS 12 GPS Receiver

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When I turn on my TomTom, it says GPS signal lost for about 3-4 minutes before it picks a signal up. This happens everytime no matter where I am. Then it works fine.


Does your GPS have a good view of the sky?
i.e. not mounted low on the dash of your car.

it really only needs to find 3 satellites to work but it might take a while to lock on if reception is low.

When you say every time you turn it on. I assume that you don't go days without turning it on. A GPS stores information about satellites and their orbits across the sky and keeps it for about 6 days. The download process of this information is fairly slow. If you run it most days the information gets updated while the gps is running so you tend not to notice.

Just some ideas to think about.


Jul 08, 2009 | Tomtom ONE GPS Receiver

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My GPS continues to search for satellite and can't seem to find where we are.


How to have a lost weekend Use GPS!

a few things to check

Good view of the sky
Well charged battery preferably on AC charger before using
Low battery power will affect connection.

Burned out SIIRF chip ( big money to have repaired!)

usually caused by plugging GPS into car DC power and then starting engine. Not recommended!


Jun 22, 2009 | Garmin nuvi 200W GPS Receiver

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Replacement of the memory battery of my Garmin 195


Piece of cake. Remove screws from back of device. Separate the housing and carefully lift up circuit card off of pins. There is a battery holder underneath. Simply remove wafer battery and replace with like model battery. Put back together and you're off.

Jun 13, 2009 | Garmin 185 Sounder GPS Receiver

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Data lost


Sounds like the memory battery ran low. Did you get a "Memory battery low" warning message when you switched it on? If so then that confirms it, and I'm afraid your waypoints are lost.

As for the memory battery it will take on some charge if you just put in fresh AA batteries. How much charge depends on the age of the GPS, mine is over 10 years old and the memory cell is pretty much dead now.

Grmin may or may not replace the cell for you depeniding on the age of the device. If you want to do it yourself it's a very fidldy job requiring some expertise with a fine pointied solderign iron. The case is held together with solicone sealant aroung the joining edges - there are no plastic catches - one piece of the case has a sort of trough around the edge that the other piece/side slots into and the trough was fileld with silicone sealant and the two pieces sandwiched together. It's not a very strong glue though so it can be prised apart with a fine knife and patience.

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You need to replace the internal Battery with the Panasonic BR2032-1F2 battery. However, yes your waypoints will most likely get lost when you do this.

May 07, 2008 | Garmin GPSMAP 180 GPS Receiver

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Garmin GPS 45


It is probably one of the following:
1)Old Software
In 1999 the GPS satellites were reset and the new almanac data had to be loaded into the GPS 45 for it to continue to work. It was not uncommon for that model to quicly kill a set of batteries when it is having difficulty acquiring, which would cause it to shut down in order to save the batteries for its internal memory.

I just did a quick search of the Garmin website and it appears they no longer support that model. If you go to their support page and send a request for a software update they can probably e mail it to you. The update is free but to down load it, you need a PC interface cable (RS232 serial port connector) Part Number: 010-10141-00 Suggested Retail Price: $ 38.09.

2)Bad antenna
To rule this one out, borrow an antenna from another Garmin 45 or Garmin 48, or plug the unit into an external antenna and see if the unit still shuts down. The drawback to this method is that you can buy a new GPS that is superior to the one you have for about the same price as an external antenna.

3)Bad batteries
If your batteries are low, the unit will automatically shut off to protect its internal memory. I tried a lot of different batteries in my 45 and I found that Eveready alkaline batteries worked best. Rechargeable nicad batteries don't work very well because they fool the battery meter. Newer models have a setting to specify that you are using rechargeable batteries.

Ultimately the best advice I can give you is buy a new GPS. For less than $150 you can buy a new model that is more accurate, more reliable, stores more waypoints, has a better display, is easier to use, and gives you more valuable information.

Please rate this information as helpful.

Jan 23, 2008 | Garmin GPS 48 GPS Receiver

2 Answers

Garmin 45


If you know your coordinates, enter them on the position screen.

Use the track pad to highlight the coordinates on the position screen. Press "enter".  Use the track pad to change the digits to match your current position.  Place the GPS where it has a clear view of the sky and wait.  If you have a power cord, plug it in as it may take as much as half an hour.  Do not move the GPS while it is trying to acquire.  The antenna should be vertical.

If the GPS still doesn't acquire, it may have lost the satellite almanac data, which has changed since that unit was manufactured.  I could not find a software update on Garmin's website for that model, however, it is possible to transfer the almanac data from another garmin.  Post a follow up message here and I can give you more instructions if needed. 

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Garmin 48 memory loss


I have fixed several Memory battery low for the Garmin 48 .

May 30, 2007 | Garmin GPS 48 GPS Receiver

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