Sounds like a short somewhere. Look over your recapping job with a magnifying glass. If caps are loose, that means that they were improperly soldered and never got soldered in place. Unsolder them, remove them and clean up the area. Examine the traces carefully. Examine the traces around the caps as well, are they intact?

Get the SE/30 schematic and check your SCSI and VIA pins to the traces with a mulitmeter. Here's hoping for the best...