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Nuvi 650 will not turn on anymore. Can I open unit to look to see if there is a blown fuse or some other problem?

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Hello Grumpa1350,

There are several possible reasons why a GPS unit might not turn on. For example, there could be something wrong with the charger such as a blown fuse, bad power adapter, or defective cable connection. The internal battery inside of the GPS also might be defective or worn-out. Or, worse yet, the unit may have a more serious hardware fault.

You don't say how you are charging the unit. I'd recommend trying a different charge method. The GPS can be charged one of three ways: connection to you car via the automobile power cord, connection to your computer via a USB cable, or charging from a wall outlet using an optional AC adapter. If you are charging the unit in your car, try connecting it to your computer (or vice versa). If the GPS turns on after being charged using one method but not the other, then that pretty much tells you that the problem is with the cable or adapter being used for charging.

The Garmin NUVI 650 does not contain an internal fuse, but there is a common 3 amp fast-blow fuse located in the vehicle power cord. If you find that the problem happens when trying to charge the unit in your vehicle, then you should change this fuse and see if that corrects the issue. The fuse can be replaced by unscrewing the black round piece at the end of the cigarette lighter plug.

If the unit does not turn on regardless of what charge method you use, then the fault is likely with the GPS itself. Either the internal battery would need to be replaced or the unit would need to be serviced to correct whatever hardware fault is causing the problem.

I would recommend you contact the manufacturer before you attempt to open up the unit. Opening the case of the GPS may void your manufacturer's warranty (if the unit is still under warranty).

Best regards,
Ken
Go Ahead. Use Us.

Posted on May 14, 2008

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My Garmin Nuvi 52LM will not turn on when I start the car with the cord in place.


1. Make sure that the charger outlet is supplying +12VDC. Try another device by plugging it into the outlet and seeing if it powers on.

2. Make sure that the fuse in the charger tip is not blown. The tip usually unscrews. It is spring loaded so be careful that the fuse, spring and power tip are not lost. Check the fuse. It should read 0 ohms with an ohmmeter. If it is glass hold it up to the light and see if the wire inside is open (broken). If the fuse is bad, replace it with the same value.

3. Make sure that the charger outlet is controlled by your ignition. If the the unit is on all of the time, regardless of the ignition setting, then the outlet is wired directly to the battery via a fuse.

4. Does the unit power up on its internal battery? Is the charger working? If it is bad, the unit will not power up when plugged into a 12VDC outlet.

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My Nuvi 650 screen reads "The following map data is more than a year oldand should be updated. When I touch the "OK" on the screen, nothing happens, it seems the screen has become unresponsive.


I would suggest some caution here. I have noticed a trend in anything that can be updated by the consumer---they just blindly do it and I have also seen as the result of this dozens of units crash and burn---if you have not issues and the unit functions why risk losing it?

Turn this unit off and see later if turned on it functions or not, failing that the only way out of the mess would be a call to the maker.

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1 Answer

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first make sure that the device is indicating that the battery is being charged or that the battery is fully charged. this is indicated on the menu screen by the battery icon as being 4 bars of full green color.
if the unit will not charge in your vehicle, you might need to replace the fuse that is located at the tip of the vehicle adapter.
1. to change the fuse unscrew the black, round end piece on the vehicle power adapter and remove it. inspect the fuse to see if it is blown. If not end here.
2. if determined the fuse is blown remove the fuse (glass and silver cylinder), and replace it with a 1A fast blow fuse.
3.ensure that the silver tip is placed in the black end piece. screw on the black end piece
if the fuse isn't blown and the unit still wont charge you may have received a usb cable with your Garmin Nuvi. If you didnt recieve one any mini usb cable should do. On this model you can connect the Nuvi to a computer using a usb cable. And see if you can charge your unit through this method. *Note* that the computer must be on for the unit to be able to be charged.
If you can charge your Nuvi unit on the computer then you may have something wrong with your cars adapter. I doubt this is the problem however if the unit is able to be turned on.
If you cannot charge the unit via a car adapter (with working fuse) or a USB cable. The most likely problem is the battery is no longer accepting a charge. On the listed unit a Garmin Nuvi 265 the battery is not user replaceable. So you would have to contact Garmin to get the battery changed or see if there is a local battery store that is able to change a battery on this model unit.
If you need further assistance please feel free to follow up with a comment and i will be here to assist you. If this assisted you please rate the comment. thanks and have a great day.

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Normal 0 false false false MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} If your GPS unit powers down before it can fully boot up, the battery will need to be charged. Please charge the unit with the vehicle power cable or on a computer for at least three hours. After charging the unit, it should power on and function normally. If the unit will not charge in the vehicle, check the fuse in the power cable for the unit and the power outlet in the vehicle.
MAKE SURE to use a Garmin charger!!!!!!

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