Replace the fuse. The black band is down in this picture.

The difficult part is that this part is not soldered in, it is held together with a crimp band.

So one must slowly open the band and then crimp it back on the new fuse.

I really have no good way of doing this, and it is the most time consuming and frustrating part of the whole repair. Take your time with a pick and pliers and slowly open them and replace the fuse.