As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WEATHER RADAR FAIL ON BOTH LOWER EICAS DURING TEST MODE. ANTENNA ON BOTH LOWER EICAS. TROUBLESHOT IAW FIM 34-43, FAULT TREE 805. ALIGNED IRU'S RAN BOTH LT AND RT RADAR SYS. BOTH CHECKED OK. NO FAULTS. GOOD TEST PATTERN. OK FOR SERVICE.