As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WEATHER RADAR SYSTEM FAILED AFTER TAKEOFF. FALSE RETURNS WERE BEING PAINTED AND SPOKING WAS ALSO APPARENT. FLIGHT RETURNED TO DTW AND LANDED WITHOUT INCIDENT. REPLACED RADAR TRANSCEIVER. OPERATIONAL CHECK OK, AIRCRAFT RETURNED TO SERVICE.