Blown fuse

If you dont tell us the fuse dims, how would we know? Is it by any chance 32mm long glass tubular fuse?

NT

Wherabouts was this fuse - inside the boiler (where?), or in a control unit, or what?

Even if you replace the fuse a bigger problem will be whether it just disintegrated due to age or if something else in the boiler (or a pump or valve which I assume are physically separate from the boiler itself) expired and the fuse blew as a consequence. Even if you do the fuse yourself are you able to diagnose/repair other bits?

originally known as 1¼"

If you mentioned some numerical dimensions and a voltage rating it would be a heck of a lot easier to make some sensible suggestions.

Mind reading is exceptionally difficult over the internet!

Rapidonline would be the first place I looked followed by RS/Farnell.

NT

I'm going to have to wash my mouth out with water but Maplin's (spit) is probebly his best bet if he want's one in a hurry.

To the OP, has the fuse blown violently, and blackened the glass or has it just visibly fractured? If the former there will be an underlying fault that you will need to trace. If the latter, if you are lucky, it might just have failed through age.

perhasp the old 1A one was an antisurge one and you arec fitting a "quick blow". Beside !A written on the cao, are there any other letters?

It's probably what I know as a 1.25" fuse, easily available from CPC and such, or even Maplin possibly.

That's the best thing for washing things out.

Bill

If you are absolutely stuck, drill the end caps of the fuse and solder in some wire. You can strip down some flex to get a thin copper wire strand.

It is about a five amp rating BTW, so you have to be sure there is no actual fault in this case. On the other hand, the damage may already be done.

The OP doesnt know where to get a fuse, or what sort of fuse it is. They're not very likely to ascertain the absence of a fault plus assess the safety of abandoning the 1A fuse and relying on what might or might not be a 5A fuse.

It might well work, or it might trash something or set fire to something.

NT

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.

Besides, one could, I imagine fashion something up out of the blown one with some wire, a normal fuse and some solder.. Ahem. Brian

In message , Brian Gaff writes

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.

If the endcaps are not already drilled then heat them with a soldering iron and flick them off, they are secured with some sort of hot-melt glue.

Insert a strand of wire into the glass tube and fold over the edge, then place the endcap back on while heating it with the iron again to re-melt the glue. Perhaps suprisingly, the wire always makes good contact. I must have made hundreds of these "last resort" repairs over the years.