As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT ARRIVED WITH CAPTAIN REPORT OF (WARN ELEX/ SLAT FLAP ELEC STATUS) MESSAGE IN EICAS. DURING REVISION WAS DETECTED BCPU POPPED DUE TO LOOSE OF WIRE NUMBER 5 TB 5001. THE BCPU C/B 6-14 WAS RESETED AND FSEU POWER OPERATED IN A NORMAL WAY TEST PERFORMED IAW MM, ALL TESTS CORRECT.