Takeoff error . Check motors and props

[Josstraathof]

I was flying over the river a month ago. By making a wrong move with my up and down stick the drone ,Mavic pro platinum, felt into the water. I dried the drone with a air dryer and then I put the drone in a bag with rice for 3days. After this I tried the drone , no problem at all. But a week later on my screen appears : takeoff error, check motors and props. Can somebody tell me what I can do?

 

[AeroJ]

It sounds like you may have got water-borne sediment / corrosion in your motors... when you spin them by hand do they move equally freely ?

 

[Flycaster]

You "might" try to flush them out with distilled water, if you feel any of the slightest rumble/grittiness in the motors....
Also making sure that the props are still good and flight servicable.

 

[Josstraathof]

It sounds like you may have got water-borne sediment / corrosion in your motors... when you spin them by hand do they move equally freely ?

If I spin them by hand , i don't feel difference between the motors

 

[Tesadorn]

You most likely are seeing the effect of corrosion.. Water has dissolved solids that settle onto the electronics and cause corrosion after time...The ONLY proper way to attempt recovery after a bath in a river is COMPLETE disassembly of the unit and a bath in alcohol.. Its best to do within hours of retrieval... After corrosion its a VERY dangerous crap-shoot to fly..