Cc121 fader works not correctly

My fader works not correctly. Have a new fader installed but the same. When I move the fader, the fader in Cubase Mixer works, but when I move the Mixer-Fader in Cubase the fader on cc121 doesn’t move correctly - is there a defekt in the circuit board ?

Is the power supply correct?
If that is not sufficient, the fader doesn’t follow.

The fader motor requires the power supply be connected. Everything else on the CC121 will work off just the USB power, but the fader motor doesn’t work without the PS.

Yes I know for what PS is. And yes, PS works perfect.