As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TURNED RADAR ON PRIOR TO TAKEOFF. WXR FAIL AND PW FAIL #1 AND #2 NAV DISPLAYS. GROUNDED - YES. REMOVED AND REPLACED WEATHER RADAR RECEIVER/TRANSMITTER IN REFERENCE WITH B737-900 AMM 34-43-41-400-801. PERFORMED OPERATIONAL CHECK IN REFERENCE WITH AMM 34-43-41-710-001, OPS CHECK GOOD.