Question about Garmin Nuvi 770 Car GPS Receiver

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Nuvi 760 will not accept charge from car charger. Does charge from USB. Car charger lights up indicating that 12V is OK. Fuse checks OK. When plugged into car Nuvi reports 'external source required for serial device'

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Hello,

Your units powered cradle has probably died out, this is very common with the 7xx series, see if you have a friend or someone that has the 7xx cradle you could try. But it is a very common issue, if you do need a replacement one can be obtained from here http://www.gpscity.ca/garmin-nuvi-700-series-cradle-replacement.html

Hope this helps!

Posted on Mar 23, 2011

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Posted on Jan 02, 2017

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1 Answer

Cannot charge garmin in the car


I assume when your charging it out of the car you are using the usb port? Check the fuse in the tip of the car charger and if it is good, chances are your cradle is defective.This is a common problem with the 700 series. Check out GPSNSTUFF.com for cradles and chargers.

Mar 09, 2014 | Garmin (010-00583-00) for nuvi 750/760/770

1 Answer

My nuvi 760 doesn't charge in the car. is there another way to charge it?


It can be charged from a computer. Connect it to your computer with the mini USB lead and it will charge. It takes about 8 hours compared to 4 hours with the car charger or with a mains charger.

If your car charger isn't working it's likely that the fuse is blown. I presume you checked the cigarette lighter socket first and that it's working. If not try something else in the socket and make sure that's not the problem.

At the end of the charger lead plug, that goes in the cigarette lighter socket, there's a ring. Unscrew the ring and the plug comes apart. Be careful not to lose the silver tip. When the plug comes apart you'll see the fuse. You'll get a replacement in any car electrics shop or anywhere that supplies satnavs. I hope this solves your problem.

Jan 08, 2011 | Garmin Nuvi 760 Handheld GPS Receiver

1 Answer

My Nuvi 760 doesn't hold a charge and keeps shutting off when charging in car outlet. Thanks for any help you can give me.


Check the car charger cigarette lighter adapter plug first, at the silver tip end of plug it has a fuse, Unscrew the silver tip CAREFULLY its spring loaded and check fuse...

Nov 06, 2010 | Garmin nuvi 750 GPS Receiver

1 Answer

Nuvi 760 will not take charge


I don't know which of the three ways you're trying to charge - car cradle, via USB cable to a computer or via accessory AC adapter. An 18 month old 760 should still have a good battery.

If you are using your car cradle to charge consistently, use one of the other methods and allow the 760 to charge for 8 hours. Use of the car cradle can cause the 760 to stop taking a charge after a while, and switching to one of the other methods should "refresh" the internal battery. Since the AC adapter wasn't included in the box, the USB cable method is likely your only other choice. While connected to your computer, you should download & update the 760's firmware. It's fast and free - and could solve other potential issues. Get the WebUpdater software direct from Garmin.

It is also possible that the fuse in the cigar lighter plug has opened. Disassemble the the plug to check for and replace a blown fuse.

If unable to get the 760 to accept a charge, you might need to replace the battery. There are several sources for batteries - but a free call to Garmin Support should be your first move.

Please rate this reply and good luck!

Jun 10, 2010 | Garmin Nuvi 760 Car GPS Receiver

2 Answers

My garmin wont accept the usb charger,it wont charge


will it charge with your 12v car set up? If not check the usb plug on the back is it loose? get a (strong) magnifing glass and check the tabs on the inside the usb plug on the gps, some times they stick inside and don't make contact. There are 5 tabs the one on the left is + the far right is ground.

Nov 06, 2009 | Garmin nuvi 200W GPS Receiver

1 Answer

660 nuvi charges fine with AC charger, but not with 12v car charg


The real question is this:

1. When you plug the Nuvi onto the cradle, do you see a yellow lightning bolt appear over the battery icon at the main menu?

Compare it with the AC charger. If you don't see the lightning bolt, then you either have (2) problems:

1. There is a problem with the car charger not feeding power to the Nuvi.
2. There is a problem with the rear cradle socket on the Nuvi.

I have fixed both problems before. More info can be found here:

http://www.sharc.net/gps_charger_repair.htm

- Jim

Oct 04, 2009 | Garmin Nuvi 660 GPS Receiver

1 Answer

Charging the battery in Nuvi 760


1) Check the cigarette lighter is working by plugging in the lighter unit and see if it gets hot. If it doesn't then it is possible the fuse has blown.

2) You can plug the unit into a PC using the USB cable and if there is a fault you will get a message on the screen about 'USB over-current' but it shouldn't damage the computer.

If it runs/charges using the PC and (1) is OK then you may have a problem with the cigarette lighter - cradle cable or a problem with the cradle itself.
HTH
Peter

Jan 24, 2009 | Garmin Nuvi 760 Handheld GPS Receiver

1 Answer

New Nuvi 760 that won't work


Using the PC to charge a Nuvi is not the correct way to charge. Use either the AC wall charger or DC car charger. Many PC USB ports can not supply enough current to charge a Nuvi.

- Jim

Dec 12, 2008 | Garmin Nuvi 760 Handheld GPS Receiver

3 Answers

Garmin Nuvi 760


Sounds like you both have a battery problem. I experienced a similar problem when trying to charge via the USB-cable connected to my computer.
Ended up buying an original charger (expensive) and the charging went smooth.
The car charger should in any case work fine, so probably your battery is not very healthy.

Try holding your finger on the battery symbol for about 10 sec. The unit will then switch to a technical page. There you can observe the battery and charging voltage. When I plug in my computer USB-cable, I read around 4,4V and that is not sufficient for charging my battery.
When connected to the original charger, this voltage rises to about 5V which gives a nice charge. When unplugging charger, the unit displays the battery capacity. If the charging voltage is OK, but battery capacity drops quickly after you unplug charger cable, the battery is probably bad. (Of course you have to charge is for some time) I think around 4V battery voltage give 100% capacity. 3,9V gives about 90% capacity.
This will not solve your problem, but can give you an idea about what is wrong.
Good luck.

Oct 28, 2008 | Garmin Nuvi 760 Handheld GPS Receiver

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