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Thread: Center ESC wire soldering question. PICTURE and more details inside. David?

  1. #1
    Navigator SilviaSGP06's Avatar
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    Center ESC wire soldering question. PICTURE and more details inside. David?

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    so I was de-soldering the center ESC to motor wire and noticed the solder blob might be touching the metal surface that the fet thing is soldered too, It was like that on all the Turnigy plush 30A ESCs that I was working on. Is is supposed to be like that, or should I remove the solder?

    If I have to remove the solder how can I do it without using a solder sucker, which I currently dont have?

    -Daryl

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    If you leave the blobs in contact, you will fry your ESC the first time you rev the motor. Ask me how I know....
    You can test to see if they are connected with a multimeter

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    FPV Addict Scotttu's Avatar
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    The iron usually holds a certain amount of solder, will take x amount, so tin the iron after it's warm with minimal, heat hte blob and move it.

    Retract soldering iron quickly but not too quickly and it should absorb some of it and by moving it you will have moved the blob from the metal.

    I do it a lot.
    "Truly superior pilots are those who use their superior judgment to avoid those situations where they might have to use their superior skills"- Author unknown

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    Navigator SilviaSGP06's Avatar
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    ok cool, thanks guys!

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    Desoldering braid is a lot cheaper and will work a treat on this.

    Regards,

    Lance

  6. #6
    Navigator SilviaSGP06's Avatar
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    I'm going to have to try that braid because I can't remove all of the solder

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    Iīm lost
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    just heat it up good and tap it lightly on your desk. the solder will fall out. from the picture it looks fine, the black part of the FET is non-conductive.
    seeing the world through a security camera

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    Navigator SilviaSGP06's Avatar
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    ill try the tapping, but the black part isnt what im worried about. on the fet one side has three conductors and the other has a long metal 'tab', that tab what is making contact with the solder blob.

  9. #9
    Iīm lost
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    in half of the fets there, this tab will be in contact with the motor lead ( see image below ), so you are probably OK. you can check the other ones for continuity between the lead and the tab.
    if you have removed most of the solder and the connection is still there, there is most probably a copper trace underneath.

    example schematic:

    Last edited by roberto; 19th April 2012 at 02:47 PM.
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  10. #10
    Navigator SilviaSGP06's Avatar
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    thanks, I was actually about to ask if it was supposed to the be connected.

    I just checked the continuity and resistance with my meter and on the ones where the blob is not touching its still shows no resistance and full continuity.

    and honestly I dont quite understand how to read that diagram in relation to the fets, and need to learn how they work general and in relation to ESCs

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