What was found
DURING EXTENDED GROUND TAXI, LT FLIGHT MANAGEMENT COMPUTER FAILED MESSAGE DISPLAYED, FOLLOWED BY SMOKE FROM THE LT CDU & THE LT CDU CIRCUIT BREAKER TRIPPED OPEN. THE CDU WAS REMOVED FOR INSPECTION & NO DAMAGE TO THE WIRING OR CONNECTORS ASSOCIATED WITH THE CDU WAS FOUND. SHOP FINDINGS FOR CDU, KEYBOARD IN POOR SHAPE, UNIT SMELLS OF SMOKE, LOW VOLTAGE POWER SUPPLY IS SHORTED, DIMMER POTENTIOMETER INTERMITTENT & LAMPS ARE OUT.