Gracias andrew_k, hace tiempo tuve el mismo problema con otra maquina igual, pero le intercambie las tarjetas del timon con otra y ambas funcionaron, pero este no ha sido el caso.

Thanks Andrew_k, some time ago I had the same problem with another similar machine, but I exchanged the rudder cards with another and both worked, but this has not been the case.

Ive had this problem years ago, it was the pcb in the tiller head.