As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF, RADAR FAILED. SCREEN WENT TO RED THEN MULTI-COLORED. SELECTED STANDBY THEN OFF, AFTER TWO MINUTES RETURNED TO ON. SCREEN WAS BLANK FOR SEVERAL MINUTES THEN RETURNED TO RED THEN MULTI-COLORED. FLIGHT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. REPLACED THE RADAR INDICATOR AND TRANSCEIVER, GROUND OPERATIONAL CHECK OK.