I’m assembling new Hexa F550 when testing I had a few plug and unplug the battery. The last time I plug in the battery, I heard two beep then no more beep from the buzzer anymore.
The symptom now:
USB/PC unable to detect my Pixhawk.
FMU “Pwr” and “B/E” LED no activity at all. No blink nothing.
Buzzer no sound on startup.
So is my Pixhawk dead? Anyway to unbrick it? Please advice, thank you.