Question about Tomtom GO 910 GPS Receiver

3 Answers

My TomTom 910 still won't charge properly! I have just replaced the battery considering that that was the most likely solution but there is one other problem that seems to be associated with the power input connector. Without knowing the pin configuration it would appear that the connection can be made by pushing hard down on the RHS of the unit, (same with the car charger) therefore dodgy connection must be on the TomTom. I notice that there's a separate connector at this side which looks like a small BNC type connector but not sure if this is where the problem lies? Your forums recognise this problem but I haven't seen a solution, I am a reasonably competent electronics engr. but my skills do not stretch to micro electronics, can you help?

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  • Tom Bedford May 23, 2011

    I think your comment about the TomTom internal connection is valid, but impossible to diagnose. The unit syncs ok to my pc and has been updated recently via the Tom Tom website

  • Tom Bedford May 23, 2011

    The TOMTOM seems to charge OK from the PC, does that mean that there is a separate power connection route via USB?

  • Tom Bedford May 24, 2011

    Thanks for your great suggestions but I can update now as follows: I had the unit "charging" via usb to my pc but eventually it switched itself off. (I had been monitoring the battery which is shown in the top right corner following a new route planned). This monitor is obviously fictitious otherwise I would still have plenty battery power. I can switch the unit on while connected to the pc but it goes off after about 10 secs confirming the lack off battery power, I can keep it on a little longer by pushing down on the RHS which makes the connection but this is intermittent. Clearly the power connection within the unit is what is causing the problem but can anyone identify which pin connection(s) are deployed and how is this remedied?

  • Tom Bedford May 28, 2011

    I spoke to TomTom technical support, they sent me a prepaid pack in which I returned my faulty unit.
    Within 3 days they'd sent me a replacement unit with full warranty re-instated.
    These guys are amazing or was I just lucky? The guy I spoke to was so helpful, explained all the options.... I honestly thought I was heading for the £50 off trade in shelf or a bill of £100 for repair.
    I am astonished and delighted, what a result!

    Thanks to all the guys on the forum for your assistance, the Fixya experience was certainly enlightening but unfortuately did not provide the solution this time!


    Kind regards

    Tom

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3 Answers

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  • Master
  • 3,018 Answers

  • To replace this battery is a tedious task in itself. It is one of the first things that goes into the GPS upon assembling. When you replaced the battery did you look at the charging unit inside the GPS unit. I will post some pictures for you that will show you the piece you need to look at and possibly replace. If you replaced the batty you should be able to get to the battery charger in the GPS because the battery replacement is far more in depth. Also there is no BNC connector, it's a just and RCA audio wire. So reassemble like you would have had to to change the battery and see if the charging unit on your TomTom is loose or see if it responds when moved a bit.


  • You will need a Torx bit number 6 for this job, start by removing the case, the four screws are located under the rubber pads on the devices base
My TomTom 910 still won't - ironfist109_102.jpg


  • The case "pod" simply removes leaving the device sat on the table

ironfist109_103.jpg


  • I remove the GPS Patch aerial for this as it makes the later stages a little easier, two torx number 6 screws and the daughter board will lift away from its multipole connector. The red line indicates the TomTom charging unit.

ironfist109_106.jpg


  • Four Torx number 6 screws secure the main board into position, remove these to release the PCB, disconnect the two plugs as shown in the picture bMy TomTom 910 still won't - ironfist109_107.jpgbr /> ironfist109_107.jpg


    Regards, Tony

Posted on May 24, 2011

  • Iron
    Iron May 24, 2011





    • I see now also that you say it charges well from the PC. That means that the fault is going to be the AC/DC charging unit on the GPS as it does not respond but the GPS does charge from the PC using a USB port which is a different port than the AC/DC port. Further reason to believe it is the charging plug on the TomTom it'self. Do you get the same lack of response from a DC charging attempt as an AC charging attempt? If neither charge it is going to for sure be that AC/DC charging port on the GPS or perhaps a cracked circuit board in the area if enough stress was put on it.



    Regards,

    Tony

  • Iron
    Iron May 28, 2011





    • I don't tell people to send things in unless the customer indicates it's still under warranty. In most instances people check that out first. I'm here to show people how to Fix things. That's what I did. I answered your question with photos. And it was proper. You just were able to get an exchange and now don't feel like paying for the solution you received.

    Tony

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  • Master
  • 343 Answers

I am not sure if this will help but the link below shows the taking apart the unit.


http://www.unc.edu/~bmoc/tomtom/Tomtom%20Go%20910%20Dismantling%20Manual.pdf

thanks for using FixYa

Posted on May 23, 2011

  • Carl W May 23, 2011

    And yes the unit can be charged via usb,so if you like you can buy a usb car charger for your car cigarette lighter/aux power. They look like this and are available at electronics stores,see link below. Again thanks for using FixYa
    http://www.radioshack.com/product/index....

  • Carl W May 24, 2011

    There are no schematics available to me.They probably don't want anyone to know and they want you to sent it back to them or buy a new one. You could call them and see what they could do. Here is a link to contact Tom Tom. Thanks again for using FixYa and if you could,please accept the solution.
    http://uk.support.tomtom.com/app/home/?L...

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  • Master
  • 823 Answers

I sometimes have that problem with mine when using the car charger. But it does not happen when connecting it to my pc with the usb cord. As long as you have 2.0 usb ports on your pc, it should charge the unti correctly. If I were you, I would try charing using that method and see if that solves your problem. Purchasing another cord to charge will not really help if the problem lies with the connection on the Tom Tom itself. If the charger works when you press down hard, maybe the connection on the tom tom has slipped back further into the unit itself and its not reaching it properly? You can check to see if this is the problem by using the cord to connect to the computer. Log into your account on Tom tom live on the internet and try updating your maps. If your cord can connect to the pc correctly and update your maps then you know it lies in the charging cords that you are using. Maybe someone was too forceful when using them?

You can send the unit in for repairs direct to the manufacturer and have the connection on the base replaced for about $ 45 (American Dollars). The address for repair is located in the manual. It can also be found on their website on the internet.

Posted on May 23, 2011

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1 Answer

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Looks like the battery needs replaced. Go to: http://www.unc.edu/~bmoc/tomtom/Tomtom%20Go%20910%20Dismantling%20Manual.pdf
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