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Wet Mini 2, what to do?
251 9 2021-12-3
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gdenyer
lvl.1
Flight distance : 234941 ft
Costa Rica
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Hi,
I crashed my Mini 2 and it fell on a building's roof. It had to spend four days exposed to intermittent rain and sun before I got the authorization to retrieve it.
Now that I have it back, I don't really know what to do, I haven't even dared to try and turn it on yet. On the outside it looks ok and quite dry, but I don't know about the inside.

I'd really appreciate any suggestions!

George
2021-12-3
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daneast
lvl.2

United States
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Absolutely do NOT insert the battery into the drone until it has been dried thoroughly. Generally...
  • Physically remove all water you can from the drone. For me, I opened the battery compartment and used a kind of downard flinging motion to physically remove as much water as I could.
  • Apply airflow / low temperature heat to quickly evaporate water. I used a hairdryer set on medium speed, low temp, to blow air in through the drone's battery door for several minutes. Then rotated the drone a few times to allow it to dry from other angles.
  • Place in a ziplock bag with a desiccant and leave for 24+ hours. This acts as a dehumidifier and helps pull any remaining moisture out of the drone.


My drone fully submerged (albiet briefly) in a creek, and has worked perfectly ever since. I didn't bother with step 3 in my case though.
2021-12-3
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daneast
lvl.2

United States
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Desiccant:
https://www.amazon.com/Dry-Premi ... fiers/dp/B00DYKTS9C

Also, in your case I would be a little concerned about corrosion or rust if it was wet for that many days, and you may also have debris in the motors. Just dry it the best you can and see what happens.
2021-12-3
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Bashy
Captain
Flight distance : 1456880 ft
United Kingdom
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When my Phantom 4 Pro fell into 2ft of water, what i did was, put it into a cooling down oven (not too hot as to melt the plastic mind) until cold, then put it in the cupboard where the hot water tank is over night, it was as good as new the following day, i did however, bin that battery, some will say the battery will be ok, others will not, for me, i err on the side of caution, for the sake of £55 compared to AC replacement, its a no brainer

The silica gel (Desiccant) is a good idea, slower, but a good one, as is a dehumidifier in a small room, that's an expensive option though unless you have solar panels
2021-12-3
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GaryDoug
Captain
Flight distance : 1122201 ft
  • >>>
United States
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I had a problem with a Mini also. I suspect water intrusion. It was a used drone that I bought on eBay. One day it failed to takeoff and both front motors were jammed. I did an investigation and found many tiny metal particles inside the front motors. I was able to remove the particles after a lot of effort but did not trust the fix so I replaced both front arms and motors. It is still flying today as I understand (new owner). I would at the very least check all motors for jamming before every flight from now on. Any that are sticking are defective.
2021-12-3
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DJI Paladin
Super Moderator
Flight distance : 318 ft

Offline

Hi, thank you for reaching out. We're sorry for the unpleasant experience. In this kind of situation, I'm afraid that you may consider sending the unit in for a proper diagnosis. You can contact our support team to start up a ticket at https://www.dji.com/support. Also, the warranty can be applied depending on the outcome of the damage assessment including the warranty period of your unit. To check the warranty period parts of your drone, you may click this link: https://www.dji.com/service/policy. Thank you for your kind and understanding.
2021-12-4
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Pinarek
Second Officer
Flight distance : 41191 ft

Germany
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I thank EVERYONE here for the good help tips, if something like this should happen to me in the future, I will then know what to do.
2021-12-4
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gdenyer
lvl.1
Flight distance : 234941 ft
Costa Rica
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daneast Posted at 12-3 05:48
Desiccant:
https://www.amazon.com/Dry-Premium-Packets-Desiccant-Dehumidifiers/dp/B00DYKTS9C


Thank you! That was a great tip!
2021-12-4
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gdenyer
lvl.1
Flight distance : 234941 ft
Costa Rica
Offline

I applied the suggestions given here and my Mini 2 is flying again.
When I first turned it on I got a stuck gimbal and one motor that wouldn't start, but after turning it off, moving both gimbal and motor back and forth a little bit and turning it back on both problems disappeared and up it went as if nothing ever happened to it.
Thank you everybody!
2021-12-4
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Mhinc
First Officer
Flight distance : 138481 ft
Canada
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All of the suggestions here were great!  I am so pleased to see no one recommended RICE!  Worst thing you can possibly do is put electornics in RICE!

2021-12-4
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