DC motor- most likely corrosion on the armature (copper). Brushes (carbon) may be worn if the motor had high use. A motor of that era that failed got tossed. Most if not all were sealed and not intended to be repaired although they can be repaired with skill and patience.

The electrical components on the card can be replaced depending on how good of an electronics parts supply you have. Some transistors will be hard to replace as they may have become obsolete. The electrolytic capacitors are the most likely failed component. You can identify them by their polarity markings on their side.