How it started. Back in May, I had 12+ working quads.. but then some solar storm of chaos broke everything.

JHEMCU GHF411 30A just had shorted FET. Like 3rd time.. also motor4.
After replacing FET, nothing from ESC - suspect blew off some SMD.

Over 8hrs.. I ended up:
- tiny resistors looked SUS.. replaced 18+ 0201 EMF voltage divider
- found diode missing. replaced it
- took off FET again, and replaced again
- replaced BB2 and Fortior from donor board.. twice.


My reward.
No BLHeli chime from motor4.. except it did 2 times.
Motor4 jerks a bit when I assist it by hand.