As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PITCH CONTROL PRESSURE IS EXCESSIVELY HIGH. THE LEFT ELEVATOR (A) SYSTEM PITCH CONTROL UNIT SHUTOFF SOLINOID HAD AN INTERNAL SHORT TO GROUND WHICH CAUSED HYDRAULIC PRESSURE TO BE SHUT OFF TO THE (A) SYSTEM PCU. THE HYDRAULIC DEACTIVATION OF THE (A) PCU, BY DESIGN, CAUSED THE SYSTEMS SINGLE HYDRAULIC SHUTOFF VALVE TO ALSO CUTOFF HYDRAULIC PRESSURE TO THE (B) SYSTEM PCU. REPLACED THE LT ELEVATOR (A) SYSTEM PITCH CONTROL UNIT. LT ELEVATOR OPERATION NOW NORMAL.