Hexacopter apm 2.8 motor problems

Hi.
I have a 550 frame with a 2.8 ardupilot.
On the first esc calibration, one motor and it’s esc got burned.
I have replaced them but now the motor doesn’t work at all.
I have tried switching the port in the apm and switching the power outlet for the esc. But still no luck.

Any ideas?