I'm still very sus of the bridge rectifier, I had this happen on the psu in
my sub woofer which blew the fuuses as well. The bridge was only rated at
the max current expected as a steady state, not peaks, two legs went short
and blew the fuse.
Brian

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This newsgroup posting comes to you directly from...
The Sofa of Brian Gaff...

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"The Natural Philosopher" wrote in message
news
On 01/02/18 10:25, wrote:
On Thursday, 1 February 2018 09:14:01 UTC, ss wrote:
On 01/02/2018 08:33, Harry Bloomfield wrote:
ss used his keyboard to write :
Charger for a mobility scooter. One charger not working, I opened it
up and as per image below it looks like some kind of fuse has blown.
Text on the board looks like 3A/2500AR.

Can anyone confirm and identify what I would need to replace.
I have limitations on electronic stuff but could probably manage to
solder this part if I can find a replacement.

https://imgur.com/a/QTZ0e

From what I can see in the image, it looks like a wire ended fuse
which
has exploded. That suggests a serious fault.

Also from what I can see, it looks like a fairly crude charger.
transformer, bridge, then possibly a relay switching the charge current
on and off, driven by a basic voltage across the battery sensing
circuit.

Could it be that if the batteries on the scooter were goosed that the
charger was trying to draw too much power and blew the fuse?

very unlikely. The huge current required to do that must have come from
the batteries, the charger would not be able to supply it.



Which would be why the fuse blew?

NT



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