As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ELEC LIGHT ON AC/DC METERING PANEL AT THE GATE. GROUNDED - YES. P5-13 BITE INDICATES SPCU INOP. DOES NOT CLEAR. PER FIM 24-34 TASK 802, CYCLED SPCU B1, B2 C/B'S. FAULT CLEARS AND DOES NOT REPOPULATE. CONFIRMED STANDBY BUSSES POWERED IN AUTO AND BAT. ETOPS GROUND VERIFICATION SUCCESSFUL, SEAMC JOEY NOTIFIED.