What was found
BURNING SMELL - EN ROUTE OBSERVED A STRONG ELECTRICAL ODOR IN FLT DECK WITH EXCESSIVE HEAT, UNABLE TO LOCATE SOURCE, NO C/B POPPED. MX DISCOVERED EQUIPMENT COOLING FAN NR 2 CIRCUIT BREAKER POPPED. COLLARED CIRCUIT BREAKER AND PLACED ON MEL 21-58-3, COND 1, ONE FWD EQUIPMENT COOLING FAN INOP. MX REMOVED AND REPLACED EQUIPMENT COOLING FAN IAW BMM 21-58-06, AND FORWARD EQUIPMENT EXHAUST SMOKE DETECTOR (TS164) IAW BMM 21-58-19-201; OPS CHECKS GOOD. *S/D* VENDOR TEARDOWN OF EQUIPMENT COOLING FAN (AXIAL FLOW) S/N 0706 CONFIRMED FAILURE OF UNIT. TEARDOWN REVEALED THE MOTOR BEARING WAS SHATTERED & FAN CONTACTED CASE HOUSING. UNIT REPAIRED & TESTED IAW OHM 21-58-15. NO PART REPLACED, INFO SUPPLIED BY VENDOR.