On 02/02/2018 16:05, T i m wrote:
On Fri, 2 Feb 2018 15:29:34 +0000, ss wrote:

snip

Update:
So fuse arrived today, soldered in to the charger, switched on and POP!

As some predicted it might. ;-)

That will be for the bin then as now beyond my understanding of electronics.

Before you do ... do you or a friend have a Digital Multimeter (or if
you have anything with a battery in it, get one yourself anyway). Put
it on Diode test, or the lowest value of ohms and test both ways
across all four of the diodes (with it disconnected from the mains of
course). If all is well with the diodes you should see a reading in
one direction and different in the other (equally on all 4 diodes),
but not a short circuit across any. Any showing as a short circuit are
probably faulty and can be replaced easily and cheaply. (You might
also just desolder one end of each diode that shows as a short and
test it like that in case the short is coming from elsewhere).

It's not difficult to do and might only cost pence if it turns out to
be a diode (or two).

At least it never exploded this time.

;-)

Ok now waiting on replacement fuse & holder for the other charger,
fingers crossed.

So time to test the diodes in the other charger. ;-)

Cheers, T i m

Readings from diodes, hope it makes sense:

https://imgur.com/a/zxgxH