As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING PREFLIGHT, FOUND THE ELECTRIC LIGHT ILLUMINATED. ACFT GROUNDED. PERFORMED BITE TEST FOR ELEC LIGHT, FOUND SPCU FAULT. INTERMITTENT FAULT. CLEARED FAULT, IAW FIM TASK 24-34 TASK 802 AND 24-31 TASK 801. ALL CIRCUIT BREAKERS RESET, ELEC LIGHT EXTINGUISHED. QRH VERIFICATION COMPLETE.