I would blame the line filters long before I blamed a more major component like an inductor or resistor. Second to that, you would be expecting cold solder joints. If all that checks out, THEN I would start suspecting the more critical components. You can't blow the SCSI controller unless you're exceptionally stupid.

If you really want to replace the filter capacitor, there are a number of modern capacitor types that you can replace them with, all of which do the job just as good. So long as the new parts match the old cap capacitance (your voltage rating can be anything between 240-600v) you're fine and they only cost $1-2 per capacitor.