As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER F/A'S PA ANNOUNCEMENT DURING TAXI OUT, EMERGENCY SWITCH BACK LIGHT AND PA SWITCH BACK LIGHT WERE FOUND TO BE INOP WITH ELECTRICAL SMELL FROM PANEL AREA. ALL SWITCH FUNCTION NORMAL. RELAMP BACK LIGHT BULBS AND INSPECTED F/A'S CONTROL PANEL. NO SIGNS OF BURNING. INSPECTED COAT CLOSET AREA FOR ANY SOURCE OF SMELL AND FOUND NOTHING. OPS CHECKED GOOD, REF MM 23-50-00.