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Fun things to do with a dead PSU? - Page 2

post #11 of 13
Quote:
Originally Posted by Atomfix View Post
He killed the PSU within the first milliseconds of the shampoo hitting the back of the transient filter PCB. You can see that after that all the pops are coming from the part of that PCB right where the AC cord comes in. So all he's really doing is shorting the AC mains.



The best PSU explosions come when the NTC thermistor dies. That component goes up like a firecracker, a big pop and then a long, prolonged sparking death. I've never seen it happen in person, but I've seen pictures of the aftermath--a 2" circular burn on the PCB and a bunch of toasted components around it. You can't control when an NTC thermistor goes off though, it's entirely random. It only goes off when exposed to unfiltered AC current with no transient filter, so it only happens on ultra-cheap-os. But the thermistor may last a week or it may last ten years. It's a random failure.


You can cause a PSU to fail explosively by shorting the legs of the primary transistors while the PSU is under load, but this is a SEVERE electrocution risk and I highly recommend against it. Besides, it's damn difficult to do on most PSUs since the primary cap and APFC coil are in the way.

I did recently come up with a creative way to make a PSU into a fireball--but it's too dangerous to post on the internet. I may try it some day though.
post #12 of 13
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post #13 of 13
Thread Starter 
Quote:
Originally Posted by Phaedrus2129 View Post
I did recently come up with a creative way to make a PSU into a fireball--but it's too dangerous to post on the internet. I may try it some day though.
If you do get around to it, make a video. I'm itching to see some PSU explosions. Thanks for the suggestions guys. I'll see what I'll do to it eventually.
    
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