As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING EMERGENCY LIGHT BATTERY PACK REPLACEMENT, FOUND BATTERY POWER SUPPLY MODULE FOR SEATS 10-12 WERE INOPERATIVE. MAINTENANCE REPLACED THE BATTERY POWER SUPPLY MODULE PER B717 AMM REF 33-51. OPERATIONAL CHECK WAS GOOD. (LP #7161872)