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Few failures while starting drone

Joined
Sep 12, 2018
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#1
Aloha,
Trying to revive my Bebop2 after a dive (eh, **** happens).
Overall situation doesn't looks hopeless. Drone starts, I see WiFi and I am able to connect my laptop to it. Could not attach SkyController or FreeFlight though. Could not turn drone off. Can only detach a battery.
Following hacker’s guide I was able to connect to my drone through FTP and download all contents of Debug and crash_reports folders.
Indeed it seems like most of processes shut down after certain failure. The wording is the following: ''Motors Error : Defectuous H-bridge or broken motor phases detected during selftest (3 motor(s) impacted)'
Here’re my questions:
1. Does this message indicate an issue with circuit board or it’s more related to motors themselves?
2. Is there any way to detect which 3 motors out of 4 I have problems with?
3. What else can be learned from a log file in my situation? Perhaps some some more selftest information which help to understand the situation with circuit board?
4. Side note. I was able to get connected to FTP only after I detached GPS. While GPS was connected, drone turned itself off after 10-15 seconds. Not sure how relevant it is.
5. I can publish some logs if anyone is interested to see.

Will appreciate your advices
 

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