I was casually flying my drone and my ESC board in my stack let out the magic smoke, and then fell from the sky randomly. I hadn't changed any tuning settings, and the stack was only ~3 weeks old. I am using a Mamba F405 MK2 stack, and the Flashhobby Samguk WU 2206 2700Kv motors. As far as i am aware, the Flight controller portion of the stack still works, but the ESC board is dead. The tune was essentially stock, except for modified serial port configuration.
What could have caused it to explode, and what should I do?