As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
IN CLEAR AIR THE RADAR SHOWS LIGHT WEATHER RETURNS IN AUTOMODE, WEATHER AND WEATHER+T, IN THE 3 TO 7 MILE DISTANCE. REGARDLESS OF THE RANGE SELECTED. THEY APPEAR IN BOTH CAPTAIN AND F/O RADAR DISPLAYS. MANUAL MODE APPEARS NORMAL. ACFT GROUNDED. PERFORMED BOTH OPS TEST AND SYS TEST OF WEATHER RADAR SYS. TESTS GOOD, REF AMM 34-43-00.