Sculpfun s30 promax, no funciona el eje y

E mi Sculpfun 30 pro max, ha dejado de mover el eje y. Dejo vídeo,

With a dual y-axis (extension kit) you need to adjust the power correctly: Workspace extension kit - Diode Laser Wiki

I have modified the voltage by moving the screw. At first it seemed to work, but after doing a couple of tests, the same error returned. Thanks

Como miro el voltaje para saber si es el adecuado. Muchas gracias

I think the reference voltage should be around 1.1V for two motors. But I don’t remember exactly, this could be wrong. I have to check. If it worked better, but not fully, try to adjust again and test again.