>
> Scotchbrite pad, one by one remove fuses and brighten contacts and add a
> dab of grease at each end of fuse to stave off corrosion.  If I can't get
> to the actual metal contacts, just removing and replacing fuse a few times
> should help, as will the grease.  Preventative maintenance.  Thoughts?

 The early type fuse holders can be difficult to clean because actual
contact is made only in a tiny line around the inner edge of the hole in
the contact.  A very small conical bur twiddled in the fingers would be a
worthy cleaning tool -- however the normal-and-should-be-routing operation
of spinning the fuses in the holders every few months will often suffice
very well.

Yrs,
d