As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
(CAN) ON ROUTINE ACFT POWER UP DURING MAINTENANCE, AME NOTICED GRINDING NOISES EMITTING FROM TAIL OF ACFT DURING HORIZONTAL STABILIZER TRIM SELF TESTS. INSPECTION REVEALED SECONDARY MOTOR CREATING NOISES, AND DEVELOPING HIGH TEMPERATURE DURING UP/DOWN CYCLES. ACTUATOR R & R WITH SERVICEABLE UNIT.