What was found
STRONG ELECTRICAL SMELL WAS NOTED THROUGHOUT THE CABIN AND COCKPIT AT 0420Z FOR ABOUT 1 MIN AND SMELL DISSIPATED. AT THE SAME F/A PLUGGED IN THE ENTERTAINMENT WIRE AT 21F, 1.5 HR LATER THE SMELL REOCCURRED MOMENTARILY. ON FINAL APP SMELL RETURNED VERY STRONG. 02 FOUND LT RECIRCULATION FAN INOP AND CIRCIUT BREAKER POPPED. FAN SEIZED UP. FWD TO MCO AND PLACARD PER MEL 21-25-01A. C/B PULLED AND COLLARED.