Question about Garmin nuvi 750 GPS Receiver

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Red light on power cord, no satelite signal

When I turn on my Nuvi 765T, it gets a satelite signal for 30 seconds and then loses it and wont come back. the light on the power cord also blinks red.

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Battery problem change the battery

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Why does my red light flash on my z998 but wont turn on

try pulling the battery out,Just leave it out a few seconds (count of 30). And unplug power(charger) cord from your phone. Then put the battery back in and press the power button.

Feb 08, 2015 | AT&T GoPhone Z998 4G No-Contract Cell...

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Will not turn on

Hi Larry -

Your Nuvi 765T should light up when you connect it to your computer's USB port. If it doesn't, there may be a problem with the USB port. Try connecting to the other USB ports on the computer (or a different computer - such as one at work, etc.) if needed. This will help rule out a defective USB port on the computer. You can also connect to a USB charger for another device that you may have instead. It may not charge with another product's USB charger if it provides a very low power output though. The auto plug will not charge the Nuvi when it gets into this condition. Even if it does not light up, leave it plugged into the USB charger / or port over night.

Check the GTM20 traffic receiver plug. It has two LEDs on the body. The one closest to the power cord end is the Traffic Reception Status light and the the one closest to the plug end is the Power light. If either of these lights is on when connected to the Nuvi, the fuse is good. If not not, you may need to change out the fuse in the FM traffic receiver plug. The plug powers both the traffic reciever and Nuvi. Carefully spin off the bright metal ring to disassemble the end to access the fuse. Replace if it is open / blown. If you need replacement parts, they can be purchased from Amazon for about $6.

After charging over night via charger or USB port, disconnect the nuvi from the power / USB cord and turn on by sliding AND holding the power switch in place to turn it on. Keep it held in position for 10 - 15 seconds before letting it slide back. During this time, the Nuvi should start up.

If it will not power up, the battery may be unable to accept a charge. You can replace the battery yourself, but it requires a steady hand, jewelers tools, good eye sight and patience from people selling parts to do this on eBay for as little as $6. Here's a link to those auctions.

If you'd prefer not to do the work yourself, a second option would be to let Garmin handle the "repair". Your 765T is likely out of warranty, and garmin offers a "flat rate repair" fee of $99. If you opt to do this, you will send your 765T to garmin and they will send you a different 765T that has been factory refurbished; complete with the most recent maps available already installed and a gaurantee good for 90 days. Not a bad deal when you consider the cost of upgrading just the maps one time on the 765T. You can start the process on garmin's site, linked here. I have used this service myself and was quite happy with it.

I hope this helps & good luck!

Jan 25, 2012 | Garmin NUVI 765T 4.4 in. GPS Receiver

1 Answer

My Garmin 765 does not turn-on or light-up on the car or when conected to the PC. The PC is not recognizing it, as usual, as a mass storage unit. Pushing the knob to ligt up the GPS, is useless. The unit...

i have nuvi 715 got the sam prablem i cut batterey conictin plug back with out batterey cut usb cable charger red wier and attatched wire to it to use it as trigger signal then conect push off swetch releas on to red wire off batterey push tow times to get it start

Feb 20, 2010 | Garmin nuvi 765T GPS Receiver

1 Answer

My garmin nuvi 765t won't 'wake-up'. i've tried it in the car and plugged in to my computer; all i get is a blank screen. my computer also doesn't 'see' the usb device.

plug it in to the computer (usb) for a few hours then try and start it. slide and hold power button for up to 15 seconds till it start.

if that fails, if that fails, unplug the nuvi and turn it off, then press and hold the lower right hand corner of the screen, keep holding/touching lower right screen then power unit on while still holding the lower right of screen until you see the message " Do you really want to erase all user data?" let off power button and remove your finger from the screen and select YES. (this will erase all your saved data) this should reset your nuvi to the factory settings.

use the web updater to update your nuvi once you get it started again.

you can get it HERE

let me know if you need further help.


Sep 24, 2009 | Garmin nuvi 765T GPS Receiver

1 Answer

765T could not find satelites.

Charge it in your car. Then go to the Garmin website and hook the GPS up to your computer. There it will reboot your entire GPS.

Jun 27, 2009 | Garmin nuvi 765T GPS Receiver

2 Answers

Garmin 765T,dont work/cant charge....

Mine did the same thing. Take a T5 torx bit and unscrew the bottom two screws. Gently pry unit apart. I used finger nails. Disconnect the battery wires from circuit board. Leave unplugged for 10 seconds. Plug the battery wires back into the circuit board. Turn unit on and then plug into computer and run the garmin web updater. Download the fix from garmin. Or you can send back to garmin and two weeks later they'll send you a refurbed unit. You'll lose all your saved data. On top of paying the shipping.

Jun 27, 2009 | Garmin Nuvi 660 GPS Receiver

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