Only one engine turns on

[NorthHouse]

Hoping someone can help. My first drone: 4 AIR 2210A rotors all configured correctly. Turnigy 6X transmitter/ receiver; KK2.1 EVO flight controller. Configured to X quad, Sensor test is good so the signal is getting through. Armed it and Fired it up and only one rotor turns on, if I bank one other rotor starts turning a little, Any thoughts?

 

[Michael Fenimore]

Are you saying only one motor spins up when you arm it?
Or only one motor spins when you give it throttle?

 

[NorthHouse]

Turns out the power distribution board was fried.

 

[Michael Fenimore]

Turns out the power distribution board was fried.

At least it was something "simple"