Question about Tomtom GO 700 GPS Receiver
I have worked on several tomtom 710's and 910's with this problem. About 95% of the time the negative pin losses connection and needs to be re-soldered. If you have a OHM meter turn it on to check continuity. turn your unit upside down with the screen facing away from you. The docking port should be facing toward you. Next take the red (+) probe and touch the solder joint on the far left (right below the gold contact pin) then take the negative (-) probe and touch it to the go;d contact pin. If you don't get continuity you have discovered your problem. To repair you will need a number 6 torx driver and remove the 4 torx screws under the ends of the rubber strip (you don't have to remove the strip just lift the ends up). Remove the face plate. There is an indention on the case on the bottom so you can get a finger nail under it. Pry up carefully till you get it off. Next the back housing should come off ( you have already removed the 4 screws). After removing the back housing you will see 2 torx screws on the top remove them (this is the sat antenna). You don't have to remove this piece. Next remove the 4 screws holding down the motherboard remove them. Next gently pry the motherboard up but be careful, you have to remove the speaker and battery cables before removing it completely. Also be careful of the wire spring on one side, this is your phone antenna.
After removing the motherboard check again for continuity. The gold pin on the far left (with the contact pins closest to you) is the negative side. The contact pin to the far right is the positive pin. Normally all you have to do now is use a small soldering iron and and re-solder the soldering joint just below the contact pin.
Hope this helps
Posted on May 29, 2009
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Posted on Jan 02, 2017
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