As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RADAR BEGAN SPOKING ON LOWER RIGHT SIDE OF SCREEN EN ROUTE DTW-BNA. THIS CAUSED ERRONEOUS DISPLAY OF KNOWN WEATHER. FLIGHT RETURNED TO DTW AND LANDED WITHOUT INCIDENT. REPLACED RADAR INDICATOR AND TRANSCEIVER. OPERATIONAL CHECK OK. AIRCRAFT RETURNED TO SERVICE.