While installing an ONS 15454 today, we encountered a power issue that blew our 30amp fuse in the dc Telect panel. After replacing the fuse (and also found defect red power cable from fuse panel to ONS), power was re-applied. After logging into the box, we had major alarms stating PWR B Side failure. We checked the voltage off the dc fuse panel which checked good. After reading the pdf files, I saw nothing mentioned of fuses onboard the ONS itself. Any suggestions of what circuit pack or common card is causing this alarm? I am trying to avoid swapping out the chassis and cards all together. Any help would be appreciated. Thanks.