As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE FLIGHT CREW REPORTED ON FLIGHT LEG #2 THE TCAS FAIL INTERMITTENT ON PRIMARY FLIGHT DISPLAY. THE MAINTENANCE TEAM TROUBLESHOT AND DETERMINED THE TCAS RECEIVER WAS DEFECTIVE. THE DEFECTIVE UNIT WAS REMOVED AND AN OVERHAULED UNIT WAS INSTALLED. OPS CHECKS WERE SATISFACTORY AND THE AIRCRAFT WAS RETURNED TO SERVICE.