What was found
FMS 2 BLACKED OUT AND WOULD NOT RETURN, FOLLOWED BY A STRONG ELECTRICAL ODOR IN COCKPIT, FOLLOWED BY RIGHT MCDU CIRCUIT BREAKER POPPING. RAN ENVIRONMENTAL SYSTEM ODOR CHECKLIST, WITH PRESS SOURCE SELECTOR ON L, ODOR DISSIPATED. TS AND FOUND RIGHT MCDU IS CAUSING BREAKER TO OPEN SWAPPED MCDU'S AND ISSUE FOLLOWED TO LEFT SIDE. VISUALLY INSPECTED LEFT AND RIGHT CR PANEL, MCDU'S PFD, AND MFD'S CONNECTIONS AND WIRING NO DEFECTS FOUND, ALL WORK DONE PER AMM 24-60-20, 23-80-00 AND 34-23-00 REPLACED RIGHT MCDU WITH REPAIRED UNIT AND PERFORMED SATISFACTORY OPS CHECK. WORK DONE PER AMM 23-80-00.