Question about Garmin nuvi 750 GPS Receiver
Nuvi 750 Car charger connection is intermittent.Either the Car charger or the Nuvi 750 connection is intermittent. The device will display a warning that it is using the battery - 30 seconds and counting down to turn off or keep on battery.Then the warning starts again at 30 seconds after jiggling the device if I do not answer device. If I answer device to keep on battery it starts draining the battery until I jiggle it again (sometimes). Is there a quick way to figure out whether it is the car charger or the device itself?
It is very rare that it would be a problem with the Nuvi 750 GPS itself. This is because there are stationary gold pads on the bottom of the 750. No moving parts to wear out. We have seen problems with a bad plug on the charger that plugs into the cradle and the receptacle on the cradle can go bad as well. I would suspect more toward the cradle as we have seen the receptacles break away from the printed circuit board that is inside of the cradle. Best way to troubleshoot is to find a friend who has a duplicate charger and cradle and swap each piece, one at a time and see which resolves the problem... either the cradle is bad or the charger plug is bad. If you want us to test your unit, cradle and charger, let us know. Good luck! :) More info on charger issues here:
Posted on Apr 24, 2013
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Posted on Jan 02, 2017
I learned that with the unit off - hold the on button down - don't release it. A PRE-BOOT MODE message will appear at the bottom and may flash. Continue holding down the start button. The first time I did it a series of dots came on the screen and I was instructed to touch each one. After that it started as normal. I plugged into a wall charger and but git the pc and nuvi icons again. I repeated the process - holding the on button on and let the PRE-BOOT MODE appear and kept holding but this time a different message came on and then the PRE-BOOT MODE appeared again. I let it go and took the unit to my car and plugged it into the Garmin car charger and it worked as it used to - normal. However, when I plugged it back in the house to the wall charged I got the pc and nuvi icon again. It appears that I am using the wrong wall charger as a previous writes stated. But the nuvi still worked in the car plugged into the nuvi charger. I hope this helps.
Posted on Feb 01, 2009
You may need to replace the battery.
The video on the link below shows how to replace the battery in a Garmin Nuvi:
How To Change The Battery On A Garmin Nuvi 760
Posted on Apr 10, 2009
Move the on/off power switch to the left and hold it there for at least 30 seconds and see if it comes back on. I know there was a bug in a firmware version that makes the unit "bricked" after a certain date. The only way to fix it if the reset didn't fix it is to disconnect the battery inside, reboot the unit and install the firmware fix.
Posted on Aug 20, 2009
Check for power at the cord. Then check for power at the rectacle. If you have good power but it still doesn't charge, send to Garmin for repairs.
Posted on Dec 20, 2009
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