I would like to add following - I had replaced broken parts of frame, but then figured out that one of motor was with lots of dirt, which i cleaned, but it still rotated with force and when i try to spin the motor by ESC - smoke came from him.
The question is - was it die in the fly OR at the ground when crashed ... ? By reviewing logs i see acceleration in Z, therefore it's possible that motor slow speed and drone crashed via spinning down.
I appreciate any help investigating logs. I need to make sure that electronics is fine and that was a mechanical issue of motor.