What was found
TURNED ON AVIONICS - FMS HAD NO SCREEN (SCREEN BLACK) AND DETECTED SMOKE, LIKE INSULATION BURNING ON WIRES. REP MET WITH CREW. FMS SMELLS BURNED. FMS CDU P/N 18355-0101-0101, S/N 41266 BAD ONBOARD ACFT. REMOVED FMS CDU PN 18355-0101-0101, SN 41266 AND INSTALLED REPAIRED UNIT P/N SAME, S/N U1187. OPS CHECK WAS GOOD- UPDATED THE NAV DATABASE TO EFFECTIVE PERIOD ENDING AUG 28/08, ALL WORK DONE IAW MM CHAP 34-62-00.