What was found
AIRCRAFT WAS GROUNDED: FIGHT ATTENDANTS REPORT SMELL OF HEATED PLASTIC COMING FROM PREMIUM ECONOMY ROWS 6 TO 9. SMELL DISSIPATED AFTER TURNING THE INFLIGHT ENTERTAINMENT SYSTEM OFF. MAINTENANCE REPLACED POWER OUTLET UNIT AT SEAT 7A (AALA202301304825) AND AT SEAT 7C (AALA202301305555) PER AMM 44-26-14-01A-520A/720A. REPLACED POWER BOX (AALA202301304363) THAT FEEDS SEATS 7A AND 7C POWER OUTLETS PER AMM 44-26-09-02A-520A/720A. NO SMELL NOTED AFTER PARTS REPLACED.