[bjornl]

Hi,
Today I was trying to connect two graphics modules to Origin 2000 racks. The first one started fine when I turned the power on, on the back.
When I turned on the power to the second one, a fuse in my house blew (220V , 16A). I assumed it was due to overload because both modules where connectec to the same phase. Even though it should thoretically work, there could have been a peak. I turned off the module, reset the fuse, and turned the module on again.

This time I heard a loud 'pop' and the module started to smell. More attempts to start module failed. So I removed the psu from the module and noticed that the smell came from the psu. One small piece of ceramic also fell out of a hole when I shook the psu.
Probably a piece of the component that popped.

I think it is strange, because I had run that rack by itself a couple of weeks ago. What could be the reason for the failure?

The question is how do I open this psu? I see no normal screw, except for the fans and handle. It seems like it is riveted together. I can of course use force, but maybe there is a correct way to do this. Once I get it open, I think it should be possible to repair if the broken component(s) can be replaced.

Plan B. Anyone got a spare psu ?

[Irinikus]

If there are rivets, you can always drill them out and then replace them with new ones once you've fixed the problem.

If you're lucky, it could maybe have been a varistor that blew. (They're responsible for surge protection)

[bjornl]

Thanks for the tip. I will see if I can use that method with out damaging to much.

Unfortunately the piece that came out of my psu is white and square, but maybe a varistor can be any shape.

[Irinikus]

That looks like part of the casing of a ceramic power resistor.