As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER DEPARTURE, RADAR STARTED SPOKING ON ALL RANGES AND SETTINGS. CYCLED ON AND OFF SEVERAL TIMES. RADAR DOES PAINT WEATHER AND GROUND RETURN. FLIGHT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. REPLACED TRANSCEIVER AND OPERATION CHECKS GOOD.