What was found
DISPLAY UNITS 4 AND 5, FMS 2 SCREEN AND RADIO CONTROL UNIT SCREEN BLANK. AVIONICS FAN INSPECTION AND CAS MESSAGES DISPLAYED. CAUSE OF DISCREPENCY APPEARS TO BE TRANSORB (PN S3106-5) WIRED INTO QUICK DISCONNECT FITTING CONNECTED TO THE RIGHT SIDE AVIONICS RELAY KZ002 (PN SM400D64). TRANSORB WAS BURNED ALMOST IN HALF, WIRES INTO DISCONNECT FITTING HAD NO INSULLATION LEFT ON THEM , 8 INCHES BACK FROM CANNON PLUG TO WIRE BUNDLE. NO CIRCUIT BREAKERS POPPED IN EITHER SITUATION. REMOVED AND REPLACED RELAY (PN SM400D64), CONNECTOR (PN MS27473E8F35S), AND TRANSORB (PN S3106-5) ALSO REPLACED WIRING. INVESTIGATE WIRING DIAGRAMS TO FIND OUT WHY CIRCUIT BREAKERS HAVE NOT BEEN TRIPPED AT TIME OF MALFUNCTIONS.