As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BTV - DURING A 1A MAINTENANCE INSPECTION, FOUND SEVERAL FORWARD AISLE PATH EMERGENCY EXIT LIGHTS DO NOT COME ON DURING TEST. FOUND BATTERY TERMINAL BROKEN. REMOVED AND REPLACED POWER SUPPLY UNIT IAW ATR JIC 33-51-21. OPS CHECKED GOOD. AIRCRAFT RETURNED TO SERVICE. (M)