What was found
IN CRUISE LOUD FAN SOUND CHANGED TO CLICKING AND SMELL OF ELECTRICAL SMOKE ASSOCIATED WITH SOUND. ISOLATED DISPLAY FAN TO FLT ALTN AND SOUND AND SMELL DISSIPATED. NO ASSOCIATED DISPLAY COOL UNTIL TOUCHDOWN AND WEIGHT ON WHEELS WITH DISPLAY FAN IN FLT ALT AND RECEIVED DISPLAY COOL CAUTION MESSAGES - IN NORM ON GROUND DISPLAY COOL CAUTION MESSAGE NOT DISPLAYED (FLIGHT #4145 FILED CLOSED) REMOVED AND REPLACED FLIGHT FAN (FAN 1) IN REFERENCE TO AMM 21-24-12. OPS CHECKS GOOD AT THIS TIME. NO SMELL AND LOUD NOISES ANY LONGER. PER AMM 21-24-12 DISPLAY COOL CAUTION MESSAGE SHOULD SHOW WHEN NOT IN NORMAL SELECTION ON GROUND. FANS SWITCH AUTOMATICALLY AS WELL WHEN IN RESPECTIVE FLIGHT OR GROUND MODE.