As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
EMERGENCY LIGHTS POWER SUPPLY AT ROW 1LK AND 24AB NOT TESTING INDIVIDUALLY IAW TASK CARD 64-3351-1-3800, STEP B. SLAVED GOOD KNOWN BATTERY STILL NO GOOD, SUSPECT POWER SUPPLY. REPLACED THE POWER SUPPLIES AT SEATS 1KL AND 24AB, OPS CHECKED OK.