As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED. EMERGENCY DECLARED. RETURNED TO DFW DUE TO MESSAGE WEATHER RADAR FAIL (*WXR FAIL*) MESSAGE. WEATHER RADAR INOPERABLE. MAINTENANCE PERFORMED TROUBLESHOOTING PER FIM 34-43-00-815-805 AND REPLACED RECEIVER PER MM 34-43-03. ACCOMPLISHED SATISFACTORY OPERATIONAL CHECKS.