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Hardware Thread, Safe way to test PSUs in Technical; Got a few PSUs handed to me left by a previous technician in a hiding hole for the past year ...
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    Safe way to test PSUs

    Got a few PSUs handed to me left by a previous technician in a hiding hole for the past year at one of our sites, if they work they're worth around 50 quid a piece due to their form factor!

    Is there a easy and safe way to check if they have blown in the past without actually plugging them into a PC? I don't like fireworks

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    mac_shinobi's Avatar
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    Last edited by mac_shinobi; 3rd March 2009 at 06:02 PM.

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    PEO (4th March 2009)

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    A PSU Tester from Maplin or so would be my best suggestion.

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    synaesthesia's Avatar
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    PSU testers as above are great and very handy peices of kit to have around.

    If you can't afford/find something in the budget/not allowed to invest in something like that, short pin 14 on the ATX connector (normally green coloured but if it's anything like Dell it could be any colour conceivable) with any ground (black cable) to power the PSU up outside of a case. Then grab a multimeter and check the values coming from the other cables, might be an idea to google around for a pinout of the connections so you know which is which on the ATX connector itself. From the molex connectors (for the drives) black and yellow should provide 12v, black and red should provide 5v.

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    SYNACK's Avatar
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    Here is the 20 pinout:


    and the newer 24 pinout is here:

    ATX (ATX12V) 24 pin power supply connector pinout and signals @ pinouts.ru

  7. Thanks to SYNACK from:

    synaesthesia (4th March 2009)

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