As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WEATHER RADAR OUTAGE. DURING CRUISE EICAS MESSAGES FOR THE WEATHER RADAR SYSTEM, AND WINDSHEAR SYSTEM DISPLAYED. EMERGENCY DECLARED, LANDED WITHOUT INCIDENT. THE AIRCRAFT WAS GROUNDED. REPLACED THE LEFT AND RIGHT WEATHER TRANSCEIVERS IAW AMM 34-42-02, AND LEFT INTEGRATED SURVEILLANCE SYSTEM PROCESSING UNIT IAW AMM 34-42-08. OPS CHECKED GOOD.