What was found
AFTER DEPARTING, THE PILOT’S EADI WENT OUT AND THE AUTO PILOT DICONNECTED. THERE WAS A SMELL OF ELECTRICAL SMOKE EMANATING FROM THE AUTO PILOT CONTROLLER AREA. O2 MASKS WERE DONNED AND DEPARTURE WAS NOTIFIED THAT THEY WERE RETURNING WITH SMOKE IN THE COCKPIT. 30-40 SEC LATER THE EADI AND THE A/P CAME BACK ON. THE ACFT LANDED SAFELY. THE CAUSE OF THE ELECTRICAL SMELL IS STILL BEING INVESTIGATED. THE EADI WAS R & R WITH A SERVICEABLE UNIT IAW PMM 12-A-34-26-03-00A-920A-A. AUTO PILOT CONTROLLER INSPECTED AND DETERMINED NOT TO BE THE SOURCE OF ELECTRICAL SMOKE ODOR. PERFORMED OPS CHECK OF AUTO PILOT SYS IAW 12-A-22-10-00-00A-903A-A. ALL CHECK SATISFACTORY.