As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SMOKE COMING FROM SEAT ROW 31 HJ. POWER REMOVED WITH IFE/PAX SWITCH. SMOKE STOPPED AND ELECTRICAL ODOR DECREASED AFTER REMOVAL OF POWER. DISPATCH AND MX ADVISED FOUND QSEB 31J AT FAULT. PART REPLACED SWITCH DOWNLOAD C/O. OPS OK. NO DAMAGE TO WIRING.