Question about Tomtom One Europe v2 GPS Receiver

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Find a circuit diagram or schematic for my TomTom?

I need a high quality photograph of the circuit board around the USB power connector of a TomTom One V2. A schematic would be even better. I need this because I have managed to blow a few of the tiny SMD resistors off and need to know where to put them back. If you have one of these devices and could snap a photo, I'd be grateful!

Posted by Aaron Horn on

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Brian Edmundson

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Hi Aaron. Sorry for the delay in responding but I have thousands of photos and not a very good filing system!! Anyway, I have some good quality photos of the boards but, looking at them closely, the resistors DO NOT have values printed on them - unusual I know but they are blank in that area.

You need a schematic if you can get hold of one or, someone with one you could measure from - although this would be difficult.

I have attached some photos, cut down for the area so you can see what I mean
Sorry I could not help more.

Find a circuit diagram or schematic for my TomTom? - find-circuit-diagram-or-schematic-eem2kn3mg5sk1cqzhuqi1sfj-3-0.jpg find-circuit-diagram-or-Find a circuit diagram or schematic for my TomTom? - find-circuit-diagram-or-schematic-eem2kn3mg5sk1cqzhuqi1sfj-3-9.jpgrc=

Posted on Dec 21, 2014

Testimonial: "Brian, you sir are an absolute legend. I really appreciate your help with this eight your old product! I have lost five components from the board: R96, R97, C84 (I think - it's the one near the top right ground plane for the USB), C86 and C87. I have recovered four SMD components from my desk. All look identical with the exception of one capacitor (it's white). I will need to get a loupe and see if I can see any markings but I think they will be unmarked. I can try to test them with a DMM. I am going to test the values and go on the assumption that the two resistors might be the same (for Data +/- lines perhaps) and that the caps might be power smoothing of some sort. So if I find two resistors amongst the components I have recovered, I am going to replace them and leave the caps and see what happens! I might use Kapton tape in future too :). If anyone has a schematic or any ideas where I could find the component values, I'd be grateful! Likewise if anyone has one of these sat navs they wouldn't mind me testing for values..."

  • 4 more comments 
  • Aaron Horn
    Aaron Horn Dec 22, 2014

    You sir are an absolute legend!

  • Brian Edmundson Dec 22, 2014

    Aaron - C84 is to the right of L3, Upper left side of photo. If you can trace where the pads for the missing bits go to then I would be happy to try and figure out values you can try. Cheers

  • Aaron Horn
    Aaron Horn Dec 23, 2014

    Here is a picture of what I've done...

  • Aaron Horn
    Aaron Horn Dec 23, 2014

    Here is a picture of what I've done...

  • Aaron Horn
    Aaron Horn Dec 23, 2014

    I thought C84 would have been the one by the upper left ground plane but I guess it could be C85? I'll have to start tracing soon.

  • Brian Edmundson Dec 23, 2014

    Aaron, I think you are correct. Looking at the pictures more closely C84 is the one that is missing. C85 is above it and still fitted. C86 and C87 are missing together with R96 and R97. That is all I think. If you can trace where the pads go to, I am sure we could sort something out. If you do have the bits, and 2 of them are black bits then 10:1 these are R96 and R97 and if they are the same value as measure on a DMM then fine, you can refit them. Good luck and please let me know how you go on.

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