As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ENGINE FIRE SHUT-OFF SWITCH SOLENOID ASSY RETURNED OF REPAIR WITH A REPORTED FAULT 'POPS SOLENOID CIRCUIT BREAKER'. DURING RECEIVING INSPECTION, THE OVERRIDE BUTTON WOULD NOT FULLY DEPRESS USING NORMAL FORCE. CONTINUITY TEST CONFIRMED THE SOLENOID HAD FAILED. BOEING NOTIFIED FOR FURTHER EVALUATION OF THE FAILURE.