As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WITH WEATHER RADAR SELECTED "PWS FAIL" AND "WXR FAIL" IS DISPLAYED ON NAV DISPLAY. MESSAGE IS PRESENT IN ALL MODES. "WX", WX+T, AND MAP MODES. ACFT GROUNDED. REPLACED WX RADAR CNT PANEL. NO HELP. ORIGINAL REINSTALLED IAW 34-43-91. R & R THE WEATHER RADAR RT IAW MM 34-43-41. OPS CKS NORMAL IAW MM 34-43-00-710-802-001. ETOPS GROUND VERIFICATION TESTS SUCCESSFUL IAW MM'S 34-43-91 & 34-43-41.