As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON THE AFTER START RECALL CHECK THE OVERHEAD ELEC LIGHT CAME ON, PERFORMED THE QRH AND NO TAKE OFF ALLOWED. GROUNDED - YES. ACCOMPLISHED P5-13 ELEC LIGHT PNL BITE PER AMM 24-31 TASK 801 - LOGGED "SPCU" FAULT. NO C/B'S OPEN AND FAULT WILL NOT RESET. REPLACED SPCU, OPS NML. REF AMM TASK 24-34-11-400-801.