As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON ARRIVAL, OBSERVED ONE EXT/APU POWER BOTH AVAILABLE, EXT ON, 2 SIGNIFICANT WATER AT ENTRY WAY DUE TO OPEN 1L DOOR. ACFT SUBSEQUENTLY LOST POWER AND UNABLE TO RECONNECT ELECTRICAL POWER. MX OBSERVED APPROXIMATE .5" WATER IN ELECTRICAL EQUIPMENT BAY AND SMOKE FROM UNDERTERMINED SOURCE. REPAIRED BURNED AND BROKEN WIRES ON THE BACK OF THE MEC RACK IAW SWPM 20-30-12.