As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 844 - SJU-BOS - SMELL OF BURNED PLASTIC IN FLT ROWS 3-10, ROW 7 (SEAT 7E) IN PARTICULAR. SMELL DISSIPATED AFTER TURNING LTV OFF. PERFORMED THOROUGH INTEGRITY INSPECTION/ OPERATIONAL CHECK OF CABIN SEAT ROWS 1-12 RT, REMOVED SEB COVERS / SHROUD AND INSPECTED XEB CONNECTORS, PINS AND ELECTRICAL HARNESSES PER TSM 24-00-00-810-823. ALSO AMM 23-39-33. NO ABNORMALITIES FOUND. OPENED AFT AVIONICS EQUIPMENT RACK PANEL AND VERIFIED LTV COMPONENT NORMAL SYSTEM OPERATION.