What was found
STRONG ODOR OF ELECTRICAL SMOKE DURING APPROACH WITH MOMENTARY DU4 OVERHEAT ADVISORY MESSAGE. APPROACH WAS CONTINUED WHERE AIRCRAFT LANDED WITHOUT INCIDENT. NO EMERGENCY WAS DECLARED. MAINTENANCE PERFORMED GVI OF FLIGHT COMPARTMENT, FORWARD FUSELAGE EXTERNAL AND INTERNAL ELECTRICAL COMPARTMENT IAW AMM 05-20-06 AND 05-20-07 WITH NO DISCREPANCY NOTED. SUSPECTED MFD 2 DISPLAY UNIT COOLING FANS MAY HAVE INTERMITTENTLY FAILED. PERFORMED AN OPERATIONAL CHECK OF THE EFIS SYSTEM IAW AMM 34-22-00 WITH SYSTEM CHECKING GOOD.