Question about Antec Phantom 500 (PHANTOM500) 500-Watt Power Supply

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(I have Antec Phantom 500) when I turn on my computer it turns on for about a split second and it goes off ..

I turned my computer off last night and when I woke up in the morning I got this problem. when I turn on my computer it turns on for about a split second and the it turns off.

Anyone might know where the damage is, i.e. which part might be the problem.

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Re: (I have Antec Phantom 500) when I turn on my computer...

Most likely the power supply but it could be the motherboard.

Do you see anything on the screen when it comes on?

Posted on Jan 18, 2008

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Should work, though the Earthwatts has the 24 pin ATX instead of the 20-pin.
You just need to snap the 24-pin connector apart to make it work as a 20-pin. It can be snapped back together for future motherboards.
The Bestec is just a standard ATX power supply

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specs are here
This includes 5VSB
There is more info here
the ATX spec and 20+4 connector pinout (wich locates 5VSB got you) can be found in the Wikipedia article (section 3 in has pin out details for ATX rev 2.1).
If your psu is missing 5VSB it is defective and should be returned to manufacturer or retailer if within warranty period. See testing psu articles also.

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Yes, and the power supply needs replacing.
4 screws hold the power supply to the cabinet or case these are usually located outside visible at the fan vents at the four corners.

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dc. That DC is filtered with large capacitance capacitors. I have a site if I can still find it that has large wattage power supplies. I'll find it and get back to you.

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