Is the fuse the correct value ? What fuse (value) is he replacing ?
Has he had the machine for a while or did he just get it ?
Yes mate - he is replacing it with a 5A SloBlo fuse.
Has owned it for a while.
Reckons the whole fuse holder ( black lid , fuse etc ) gets physically blown out of its place in the metal box when the thing blows the fuse as well.
I have not been to see it happen in person.