Re: Psu problems?

Thanks for the reply. Its a basic system with onbaord sound and video
card. I'm using two hard drives, a dvd/cd burner, and a tv tuner card.
The cpu fan plugs into the motherboard header.
Paul wrote:
In article <1139713171.883285.187010@xxxxxxxxxxxxxxxxxxxxxxxxxxxx>, "tom"
<tominto@xxxxxxxxx> wrote:

hello. I just purchased a matx psu to power a basic asus motherboard
two fans, cpu fan, dvd drive/cd and floppy drive. It's a 320 watt
diablotek, and I think it should be enough.(?) When I plug it in the
standby light on the motherboard comes on, but when I press the power
on button, the only sign I see of anything happening is that the cpu
fan goes on for a split second, and then nothing. Anyone have any
ideas? Thanks

The more info you give, like the hardware inventory, the easier
it is to tell whether it should work or not.

For a basic computer these days, at least one that has that
2x2 ATX12V power connector on it, I'd want at least 12V@15A
rating.

You have to realize, that not all hardware these days, has good
power consumption information. And that is why so many users
end up with power supplies much larger than they need - it is
because you cannot get power numbers for everything.

These are examples of sites that attempt to calculate power.
They tend to err on the high side, which means you are likely
to succeed by using their advice. But the power supply you end
up with, might be bigger than is called for.

This one gives a simple "wattage" rating, when you really need
to know the output current for each DC voltage (like 12V@15A)

http://www.jscustompcs.com/power_supply/

This site offers a spread*** style, but the hardware types
are not up to date. I cannot ping the site right now, either...

http://takaman.jp/D/?english

Are you plugging the CPU fan into the motherboard CPU fan
header ? Or is the CPU fan connected to a Molex drive connector ?
The motherboard may be expecting to see a fan RPM signal on
the CPU header, and if the RPM signal is absent, it could shut
down. But based on your description, it almost sounds like the
power supply itself is giving up.

http://www.tigerdirect.com/applications/searchtools/item-details.asp?EdpNo=1220399&Sku=D15-1026&SRCCODE=PSCANDF&CMP=OTC-PSCANDF

AC INPUT 115V/230V - 60/50Hz
DC OUTPUT +3.3V +5V +12V -12V -5V +5VSB
28A 30A 15A 0.8A 0.3A 2A
320W
Max
Combined

That is enough for a basic low end system. If this is some
kind of "gamer system", then it won't be enough. When you
tell us what is in the computer, that would make it easier
to decide. But the assumption is that the thing really meets
those specs, and it is only $25.

HTH,
Paul

.