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Error 71. Fixed at home.
1942 13 2018-3-4
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Fireduck
lvl.1
Russia
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After a crash from two meters, i had a problem with an accelerometer error, and all trying to calibrate IMU always ends with error 71.
I've read on this forum, that problem is in the stucked sensor in IMU.
All my atempts "tap" or "hit" SPARK by hand, had no effect.
But IMU can see throug the front hole on SPARK body(black box on foto). I took thin and long screwdriver and gently tapped the sensor(spark was turned off). After that actions, i turned on the spark and started calibration IMU. And ... calibration ended sucsessfully! No error 71!

Maybe it can help somebody. But do this at your own risk.

P.S. Sorry for my english.

20180304_124957.jpg
20180304_124957.jpg
2018-3-4
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Solestacz
Second Officer
Flight distance : 489193 ft
United States
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useful bit of info there - glad it worked for you - filed for future reference.
2018-3-4
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BeastMaster_101
First Officer
Flight distance : 1082992 ft
Canada
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hmmm... Interesting findings. Thanks for sharing!
2018-3-4
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S.J
Captain
Flight distance : 322454 ft
Kuwait
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great info !!
2018-3-4
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Rustic17
Captain
Flight distance : 641755 ft
United States
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Some screwdrivers are magnetized...was yours???
2018-3-4
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KurtVD
Second Officer
Flight distance : 365299 ft
Switzerland
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Rustic17 Posted at 2018-3-4 17:42
Some screwdrivers are magnetized...was yours???

Would that make a difference for the IMU? It does not seem to react to magnetic interference.
2018-3-4
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davidmartingraf
Captain
Flight distance : 31303589 ft
  • >>>
United States
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That's interesting to learn and thanks for sharing, although sorry I'm not too sure if that's a long-term solution or needed sanity check? My advice always, if and, whenever in a crash, would be to have DJI take a look at your drone. I'm sorry if I disappointed you, it may be resolved but always better safe than sorry?
2018-3-4
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Rustic17
Captain
Flight distance : 641755 ft
United States
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I don't know that much about the DJI IMU...I seriously doubt there are actual gyros for all three axis inside that small little module...more likely pezioelectric crystals that send a minute electrical signal as they are stressed in a certain axis.  Whether the screwdriver touching the module caused a discharge of static electricity or whether the magnetism associated with some screwdrivers caused a change in the electrical field of the crystals it really doesn't matter.  But if you want to replicate what worked for the OP, you need to know what kind of screwdriver was used.
2018-3-4
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DJI Elektra
Administrator
China
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Hi, there. We would not recommend users fix their drone on their own. If your drone crash, please send it back for repair: http://www.dji.com/support Thanks for your understanding.
2018-3-5
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mfarrag
New
Saudi Arabia
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Thanks Fireduck
It works for me like magic , I recommend it for every one getting error code 71 while calibrating the IMU after Crash
2019-4-6
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fans831629e9
lvl.1

Australia
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Great information
2019-5-6
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DJI Tony
Super Moderator

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Hi, thank you for the inquiry. If you experience the same situation due to the crash, we're recommending our customers to send the unit into our facility as fixing the drone by our customer's end would void the validity of the warranty. If you wish to contact our support, please see the link below. Thank you for your support.
2019-5-7
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Shindig82
lvl.1
United States
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I had the same problem, could not fly for weeks. i didn't even crash. tried the fix above, did a full calibration and it worked and flew perfectly!
2019-11-20
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ssylca44
Captain
Flight distance : 117726 ft
Canada
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Thank you for the tip. Cheers
2019-11-21
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