In message , Brian Gaff
writes
However one needs to suspect it might just be there is a real fault in the
circuit, so don't just buy one.
Are these fuses really obsolete, or is it just from the boiler spares
people?
I'm sure I've noted them inside hi fi equipment of fairly recent vintage as
a last line of defence as it were.


No, I doubt the fuse is obsolete, just that the OP probably didn't know
of the best places to look (cpc, maplins etc.) - though they never said
where 'everywhere' was that they looked.
--
Chris French