What was found
DURING RUN UP, SMOKE OBSERVED COMING FROM UP CIRCUIT BREAKER PANEL, AIRCRAFT SHUT DOWN AND MAINTENANCE WAS NOTIFIED. MAINTENANCE INSPECTED AND FOUND THE DIODE ON THE BATTERY RELAY, SEVERAL WIRES ON BATTERY RELAY BURNED. FURTHER INSPECTION FOUND WIRES GOING UP THE CENTER POST OF WINDSHIELDS WERE ALSO BURNED AND THE BATTERY SWITCH AND GENERATOR SWITCH ARE BURNED. MAINTENANCE IN PROCESS OF REPLACEMENT OF THE WIRES AND SWITCHES. (K)