What was found
WHILE EN ROUTE FROM YVR-OAK, CO-PILOT'S DME INDICATOR DISPLAY WENT BLANK. LATER THE NR 1 DE-ICING GENERATOR FAILURE LIGHT ILLUMINATED ACCOMPANIED BY A SLIGHT SMELL OF SMOKE. CREW MADE A PRECAUTIONARY LANDING IN PDX. THE AIRCRAFT LANDED WITHOUT INCIDENT. REMOVED AND REPLACED NR 2 DME AND NR 1 ISOLATION TRANSFORMER. DURING OPS CHECK WINDSHIELD HEAT C/B POPPED WHEN SELECTED ON HIGH. FOUND NR 2 WINDSHIELD HEAT HI/LOW RELAY SHORTED TO GROUND CAUSING SEVERAL WIRES TO BURN. MAINTENANCE REPAIRED AND REPLACED BURNED WIRING. REMOVED AND REPLACED HI/LOW RELAY. OPS CHECK GOOD. AIRCRAFT RETURNED TO SERVICE. (M)