But, the fuse is so crazy expensive ($5,000), there is no way to even try it out in other gear or even in the repaired linestage for fear of it actually working as it is supposed to work. It makes no sense to have a situation where you are saying something like "thank goodness my power transformer blew up in time to spare the fuse."
They are trying to save $1000-2000 worth of repair by using a $5000 fuse? Yeah that makes no sense. At that point why not just remove the whole fuse holder and directly wire it with no fuse or fuse holder? Or are people going to say having a GSA fuse in a steel fuse holder sounds better than no fuse/fuse holder at all?