FamicomBox PSU

[MegaManSec]

Hey everyone..

I've got a FamicomBox here, but the PSU seems to be shot.

When turning it on, it blows the fuse within the PSU, and requires it to be replaced.
My question is simply.. what could be wrong with it?

I tried my friend's PSU on mine, and it works fine.

Here's some pictures:
https://imgur.com/hmpY4Ej,CXLGwHZ,UGU61xC,Db3wIZG,Rz72PGR,uhoyMWF,9i6r01W,d778tsY

Pic one is the whole thing(unplugged, though)

2 is the  transformer part w/ down-converter i guess.
3 the same.

Now, 4, is the 'front unit'. On the left, is where you connect it to the socket.
On the right is where it goes 'out'. So that's where a 5V connection goes out.
The middle is something else completely.
That's if you want to plug something else into the socket, like a TV, to save space. You'll see what I mean later.
Pic 5 is the same, but a different angle. You can see where the fuse goes.

On pic 6, there's a 4A fuse which is only used those 2 outputs on there. And that doesn't blow, so that's fine. That's not even used, really.

Now, on the left, you can see the 'output' cord, where it outputs 5V 5A.
And on the right, "AC IN 100V".

And picture 7 and eight are is my makeshift PSU I'm using.



When I bought it, it was apparently working(with a picture of it working)..
So I'm thinking perhaps whilst it was shipped, something could have been knocked out of place.

Originally when I plugged it in, I didn't use a downstep converter... So that could have done something too? Perhaps blown a cap? (Very stupid thing to do, I know.)
Luckily it had the fuse in there, orelse the whole thing could have blown..!


I also made a makeshift PSU with a computer PSU by cutting an HDD power cable - http://s.eeweb.com/members/extreme_circuits/blog/2013/04/24/pc-power-box-1366818559.gif and powering the [broken] PSU straight from that, bypassing the fuse part..
It worked well, for the time being..

[fredJ]

Did you plug it into a 220V power net without stepdown? That will break it immediately. These old power supplies don't have fuses to protect against that. What I think happens is that some important part inside it will melt or explode. Could be a cap.