What was found
(CAN) DURING CRUISE ALTERNATOR NR 1 WENT "OFF LINE", IMMEDIATELY NR 2 WENT OFF AS WELL. LARGE ELEC PWR DRAW ON AMMETER NOTICED, STRONG ODOR & SMOKE NOTED FROM LOWER LT SIDE OF CONSOLE. EMERGENCY DECLARED & BATTERY MASTER TURNED OFF. MLG EXTENDED MANUALLY, & LANDED. ACFT INSPECTED & NO BURNED WIRES OR COMPONENTS FOUND IN CONSOLE AREA. SUSPECTED THE GEAR MOTOR AT FAULT. ACFT RETURNED TO BASE WITH MLG MOTOR CIRCUIT BREAKER OUT & MLG IN DOWN POSITION. AT BASE, DETERMINED THE MLG MOTOR HAD OVER-HEATED & NOT WORKING NORMALLY. SYS PRESSURE SWITCH FOUND TO BE STICKING INTERMITTENTLY. SINCE GEAR MOTOR CIRCUIT BREAKER DID NOT POP IN FLT SAFETY HAS A CONCERN & MLG MOTOR, MLG MOTOR CIRCUIT BREAKER, PRESS SWITCH, RELAY & 2 DIOIDES SENT FOR EVALUATION. 2ND REPORT OF INCIDENT. DURING SUBSEQUENT MX, DIODE FROM MOTOR TO RED MLG UNSAFE LIGHT FOUND BURNED OUT. MLG CAN BE UP & LOCKED WITH MLG MOTOR STILL RUNNING & RED UNSAFE LIGHT WOULD GO OUT. MLG MOTOR COULD BE RUNNING WITH NO COCKPIT VISUAL WARNING.