What was found
RECENTLY RECEIVED A MCDU FOR REPAIR. WHILE CONDUCTING MX, NOTED THAT DURING A PREVIOUS REPAIR THAT SOMEONE HAD REPLACED A FUSE F1 ON THE 28 VOLT INPUT LINE OF THE LIGHTNING PROTECTION CIRCUIT BOARD WITH A SOLID WIRE. THE PRODUCT IS BEING REPAIRED AND BROUGHT BACK TO CONFORMITY AND DWG SPECIFICATION. NOTE: ADDED MAY 27 BY PRM: SUBSEQUENT EXPLANATION RECEIVED FROM AIRLINE, EXPLANING THAT THE CONDITION DETECTED WAS INDUCED DURING TROUBLESHOOTING PRIOR TO RETURNING THE UNIT TO CMC FOR REPAIR.