Problem with old power supply

Discussion in 'Off Topic Discussion' started by Hawanja, Jul 30, 2005.

  1. Hawanja

    Hawanja Ancient Deadly Ninja Baby

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    So I have enough computer junk laying around to build a whole system, so today I threw some of it together, nothing very powerful but could maybe run WIN 98 so I could play DOS games on it.

    Anyway, I plug the thing in, switch it on, and it blows a fuse in my house. Tried it several times, same result, turn it on and the lights in my room go off. Anybody have any idea what is going on? The power supply is about 7 years old here so it's problably faulty. But I've never had a computer blow fuses in my house before.
     
  2. sayin999

    sayin999 Officer at Arms

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    its possible that this old power supply uses a ton of energy and as well might be faulty sending a surge to your outlet. I have two bathrooms in my house and when both are running the vent fan, the fuse blows, i just say find another power supply.
     
  3. You should get that sorted.

    A fuse is only meant to blow when theres a problem, do you have a fuse fitted of the wrong rating?

    ...When you consider that it takes roughly 3X the 'normal' fuse rating amp's to blow a typical fuse. The chances of blowing a fuse on correctly functioning electrical items should be negligable, not accepted as the norm 'cos both are running!

    Are the fans on a ring main or a spur? What is the rating of the fans?
     

  4. Nothing amazing you have a f*cked PSU.

    ...Chances are that after sitting around for 7 years you have a dried out starting capacitor causing a dead short.
     
  5. Hawanja

    Hawanja Ancient Deadly Ninja Baby

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    Dammit. Heres hoping it didn't fry the motherboard.
     
  6. Zilog Jones

    Zilog Jones Familiar Face

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    It should in theory have blown the fuse inside the PSU before killing the motherboard, but in theory communism works...

    oldengineer, is it possible to just replace the caps when stuff like this happens? I'm scared of big caps though -_-
     

  7. Yep it's easy to replace what you like, big caps aren't an issue as long as you remember to ground them out before working on old charged ones.
     
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