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Hardware Thread, Using a multimeter to test for faulty PSU in Technical; Hi, How can I use a multimeter to check to see if a power supply is working? Obviously I could ...
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    Using a multimeter to test for faulty PSU

    Hi,

    How can I use a multimeter to check to see if a power supply is working? Obviously I could try a different PSU but dont have any spares of this type.

    Power supply is a 120v micro-ATX type with a 20 pin mobo connector

    Cheers

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    Re: Using a multimeter to test for faulty PSU


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    Re: Using a multimeter to test for faulty PSU


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    Re: Using a multimeter to test for faulty PSU

    Great thanks!

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    Re: Using a multimeter to test for faulty PSU

    You can get a little device for this as well. Its nice and quick and easy they cost about £5. Learning to use the multimeter is also a valuable skill though.

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    Re: Using a multimeter to test for faulty PSU

    Quote Originally Posted by TeddyKGB
    Hi,

    How can I use a multimeter to check to see if a power supply is working? Obviously I could try a different PSU but dont have any spares of this type.

    Power supply is a 120v micro-ATX type with a 20 pin mobo connector

    Cheers
    If you just want to test if it turns on or not then there is a little bodge you can do. I'm sure I will get thourghly spanked for saying this but using this pic you can get a healthy PSU to turn on. If it is duff then you get nothing.

    EDIT: Just looked at the Overclockers site and they give the same picture, so that makes me a feel a bit better. Always assumed I was doing something not best recommended for some unknown reason!
    Attached Images Attached Images

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    Re: Using a multimeter to test for faulty PSU

    Quote Originally Posted by Geoff
    OK, so i followed this with putting the little wire in. I plug it in and the fan spins momentarily. I then test 3.3v, 5v and these dont register anything. I then test 12v and this os measuring .300 but falls 1 at a second

    Is this telling me the PSU is goosed? :?

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    Re: Using a multimeter to test for faulty PSU

    I cant remember if these PSU's are thermostatic hence the momentary fan - but I guess from that it's fair to say it is goosed

    Still.. it was nice to get down and dirty with the volt-o-meter

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    Re: Using a multimeter to test for faulty PSU

    Those PSUs are poop. Try getting a new one or rebuild it in a new case (cheapest way)

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