As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 834 STI-JFK, CREW REPORTED BURNING PLASTIC SMELL FROM ROW 5DEF AND 6DEF. SECURED LTV VIA AFT SWITCH AND CP RACK POWER AND SMELL WENT AWAY. COMPLIED WITH TSM 23-39-00-810-801 "ELECTRICAL ODORS OR FUMES IN THE CABIN DUE LIVE TV SYSTEM" NO FAULT FOUND. ALSO PERFORMED TSM 24-00-00-810-823 AND TSM 26-15-00-810-804. NO ODORS OR FAULTS NOTED.