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Won't power on after crash

Discussion in 'Phantom 2 Discussion' started by dawible, Dec 30, 2014.

  1. dawible

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    New Phantom 2 pilot... Soft crash into a tree under power. Unit powered itself off, fell to the ground relatively softly - but the battery did pop out. (Which is strange because the battery is very stiff to remove.) There is no visible physical damage. Battery itself powers on normally. But when battery is in the drone and I try to power on, all LEDs on all 4 arms flash VERY briefly - there is a small "plink" noise (from somewhere in the central area?) - then everything shuts down. It's like there's a short causing a breaker to trip. How can I diagnose? And how in the world could a minor crash (NO visible damage) cause a short???
     
  2. Hughie

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    Welcome to the forum.

    You have a blown ESC - usually caused by an obstruction stopping the propellor turning.
     
  3. dawible

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    Here is a picture of the worst ESC - which doesn't appear to me as if it is fried [​IMG]. Does it look fried to you???

    I also posted two 5-sec videos of the symptom [youtube]http://youtu.be/qlwPxoNK4zE[/youtube] and [youtube]http://youtu.be/HR2LAqTJNzQ[/youtube]
     
  4. Hughie

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    I didnt see a picture of the ESC :(
     
  5. Buckaye

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    ESC pic didn't come through.

    If the landing on the ground was hard enough to pop the battery loose... It was certainly hard enough to pop a solder somewhere.

    As mentioned before... Might be the ESC... Not sure you'd always be able to see the damage to it.


    My experience from the few crashes i have experienced if it fall to the ground from anything higher than 5 or so feet... There's enough weight and momentum to damage something...
     
  6. RDCF550

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    You have a short somewhere, most likely an ESC as Hugie has stated. It doesn't take much when a prop is stopped and the power is still on for an ESC to get damaged, and most times they will not show any signs of being burnt up.