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PC Power Supply Discussion Troubleshooting and discussion of computer power supplies

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Old 03-11-2008
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Default Seasonic M12II 500 review

by SKYMTL or Antec EA500 refined.
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With the M12II 500W, Seasonic seems to have manufactured the perfect power supply for consumers looking for modularity without breaking the bank.
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The only other area we found needed some improvement was with the +12V rail outputs. While a combination of 17A and 18A should be more than enough for anyone, we would have preferred to have seen either two 18A rails or a single, larger rail.
Thanks SKYMTL for another nice review.
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Old 03-11-2008
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Are these really multi 12V? Did you check the traces?
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Old 03-11-2008
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I'm pretty sure it's actually a single +12V rail.
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Old 03-11-2008
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Loading a heavily overclocked and water cooled HD2900XT shut the PSU down so I assume that it bumped into the OCP.....

And plus, I will not make assumptions based on tests I cannot back up with facts.
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Still, it is worth checking the terminations to double confirm your test results.
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Old 03-13-2008
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I would be surprised if Seasonic all the sudden went back to separate OCP circuits.
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Old 03-13-2008
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A quick and easy way to check (skillful folks only, please).

Use a DMM, set to measure DC current. Most cheap units support up to 20A. Better units will support up to 40A. Put one probe in +12V and the other in ground. The Amps will click up and up and up. Eventually the PSU should shut down. If the PSU doesn't have OCP, you'll see the higher numbers on the DMM. Of course, the DMM should shut down if it hits it's limit, or blow it's fuse.
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Old 03-13-2008
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Whelp....unfortunately, I don't have the time to hook it back up and it is buried under a pile of other units. I will check again in about a week...
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