As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
STABILIZER MESSAGE IN "RED" ON UPPER EICAS. STABILIZER DOES NOT RESPOND TO ANY INPUTS. REPLACED ACTUATOR CONTROL ELECTRONICS "C" AND PFC "C". ACCMP'D STAB TRIM TEST TO UNLATCH FAULT. STAB TRIM MESSAGE HAS CLEARED AND STABILIZER NOW RESPONDS TO INPUTS.