Dear Bob,
many thanks for your help. Ampilier CA-530A PN 37970-0028, Control Unit C-530A PN 37960-1028. I am able to send the PN for the servos on thursday. The origional equipment list shows Pitch Actuator 35070-0124 Roll Actuator 35070-0028. I need no parts because I have to check first all components to locate the error.

Jonny