the sideways cutters IMHO is a BAD idea. ive broken lots of traces this way.

In a cramped circuit board like that, then the easiest thing to do is use 2 soldering irons at once, or a pair of SMD tweezer irons, and remove each capacitor that way.

then you can follow the rest of that guide to replace them.

Once you replace those capacitors, i bet everyone of those machines will boot.

Cant say much about the SCSI drives. they will all fail eventually. getting old.

Im working on a replacement for that......