CS513 IS DEAD
There is an onboard (1A?) soldered fuse for transceiver power that may blow out if there is a short circuit. If this happens, I believe the card must be returned to ABB for fuse replacement. A colleague said that the run light should still stay on even if this happens.
Are you sure it is the CS513? The SC510/520 carrier board could be at fault? Try another location or carrier board.