As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SPOILERS EICAS. FOUND WIRE HARNESS THAT CONNECTS TO NR 4 SPOILER PCU BURNT. NEW NR 4 SPOILER ACTUATOR INSTALLED. NR 4 SPOILER TROUBLE-WIRE HARNESS DISCONNECTED AT BOTH ENDS FOR REPLACEMENT. ALSO CLAMPS AND OLD HARNESS LEFT LOOSELY IN PLACE FOR NEW INSTALLATION ROUTING. ALSO, STRING TIES CUT ALONG HARNESS LENGTH. REPLACED AND SECURED WIRE HARNESS ASSY FROM NR 4 SPOILER PCU TO DISCONNECT BRACKET AW0671.