As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
BURNING SMELL AND SMOKE COMING FROM AREA OF ROW 26. OVERHEAD LIGHTS FLICKERING AT ROW 26 AT THE SAME TIME SMELL OCCURED. DEACTIVATED BALLAST FOR OVERHEAD AND SIDEWALL LIGHTS FOR ROW 26 E/D. SECURED CONNNECTORS FOR BALLASTS. FOUND BALLAST SHORTED. REPLACED BALLAST.