As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WX RADAR SWEEPS CLOCKWISE ONLY AND THEN WENT TO SPIKING, BOTH LT & RT SYSTEMS. DUE TO THUNDERSTORM ACTIVITY AT DESTINATION, AIRCRAFT WAS DIVERTED TO KMIA. AIRCRAFT WAS GROUNDED AND MAINTENANCE REPLACED THE WEATHER RADAR DRIVE UNIT, IAW AMM 34-43-05. AIRCRAFT RETURNED TO SERVICE.