Extruder Motor will not work

I have changed the motor, motor cable, ribbon cable and extruder PCB. It still will not work.
Everything else works. It will heat up and start printing, but the motor will not turn. I am not sure what else to try. It doesn’t click, because it doesn’t turn. I even took the motor off (still plugged it) and started it. It won’t turn.

Hi, I am afraid the motherboard might be at fault, especially that you already replaced components which could be responsible for the given problem. In order to get a new motherboard, please contact us via support form.