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  Help with ASUS A7N266-VM 
 
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Jacob Jewler Jun 09, 2004, 07:21pm EDT Report Abuse
>> Re: HELP!!! ASUS A7N266-VM
Forgot to add that current power supply only has one fan, out the back. if i was to mount this antec upside down hot air would be going into my system right?

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Milt Jun 09, 2004, 07:34pm EDT Report Abuse
>> Jacob
That's a 'standard' ATX PSU that you are considering, and they are all designed to mount with the second fan facing down, into the lower part of the box.
That second fan draws hot air from the case (just above your CPU), into the PSU, and then blows it out the back with the 'normal' fan on the rear.

That one will do you fine.

Robert Shores Jun 09, 2004, 07:45pm EDT Report Abuse
>> Re: HELP!!! ASUS A7N266-VM
Some early ATX cases mount the power supply the other side up. Just need to check out your case.

Jacob Jewler Jun 09, 2004, 08:53pm EDT Report Abuse
>> Re: HELP!!! ASUS A7N266-VM
Well it looks like the power supply is inserted upside down into the case, As you can see from pic 12 the markings on the power supply are upside down when taken out of the case.

Updated.
http://www.iownjoo.com/freeimghost/neop/b11.jpg
http://www.iownjoo.com/freeimghost/neop/b12.jpg
http://www.iownjoo.com/freeimghost/neop/b13.jpg
http://www.iownjoo.com/freeimghost/neop/b14.jpg
http://www.iownjoo.com/freeimghost/neop/b15.jpg


Josh Butler Jun 09, 2004, 09:19pm EDT Report Abuse
>> Re: HELP!!! ASUS A7N266-VM
My aspire 500w seems to mount upside down, but a date with the drill and dremel and all is good.

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Milt Jun 09, 2004, 09:31pm EDT Report Abuse
>> Jacob
Just compare your image 13... this one...
http://www.iownjoo.com/freeimghost/neop/b13.jpg
with this one from the Newegg website, and you'll realize that all is well, and the new Antec will be oriented correctly.

This Newegg image is upside down, but if you turn it over, the holes will line up with your case, and the fan will face down, as you want it to....
http://images10.newegg.com/productimage/17-103-913-07.JPG

Robert Shores Jun 09, 2004, 09:37pm EDT Report Abuse
>> Re: HELP!!! ASUS A7N266-VM
Jacob

Like Milt said, you're all set using the Antec power supply with the case you have. In the past I've had to use the drill and dremel tool to flip them over too.

Robert Shores Jun 09, 2004, 09:43pm EDT Report Abuse
>> Re: HELP!!! ASUS A7N266-VM
Here's a link with more info on this power supply mounting issue for anyone that is interested.

http://www.directron.com/powermod.html

Simon Dompierre Jun 21, 2004, 08:42pm EDT Report Abuse
>> Re: HELP!!! ASUS A7N266-VM
Hello, I've bought a A7N266-VM that I had to change it 4 times when bought, because of the same problem as many of you(nothing at screen) After 8 month of use, i've see that my +12V Voltage decreased under 10.50V! That is causing me frequent crash and freezes... I'm using a 420W P/S, and those mo*********** from asus didn't answered my RMA request, I don't know what to do...

Mike Pacheco Jun 21, 2004, 11:21pm EDT Report Abuse
>> Re: HELP!!! ASUS A7N266-VM
If your 12v rail is at 10.5v, then its obvious that your power supply unit is the issue, not the motherboard!! Which brand PSU do you have? Try replacing that first. Just because it says it's 420W, the cheaper ones don't always deliver it.

Simon Dompierre Jun 22, 2004, 09:39am EDT Report Abuse
>> Re: HELP!!! ASUS A7N266-VM
It's a Okia(?)... The thing that is strange, is that everything have been working for 8 months, the +12V was 12.4V, and now it decreased, without reason...

Robert Shores Jun 22, 2004, 06:16pm EDT Report Abuse
>> Re: HELP!!! ASUS A7N266-VM
How do you know that the 12 volt rail is at 10.5 volts?

Simon Dompierre Jun 22, 2004, 10:10pm EDT Report Abuse
>> Re: HELP!!! ASUS A7N266-VM
I know it with asus probe.

Mike Pacheco Jun 23, 2004, 10:52am EDT Report Abuse
>> Re: HELP!!! ASUS A7N266-VM
As ambient temperatures increase, I'm sure your system is running a little hotter and this affects not only the CPU but also the output of your PSU. Do you have an additional power supply hanging around or is there anyone you know that might have an extra one to borrow?

Also, what else do you have installed? I.e. multiple hard/optical drives, high power video cards or fans. Alternatively, for testing purposes, try disconnecting a few of your less needed hardware and see if your power output comes within 5% of 12v and then test the stability of your system.

Simon Dompierre Jun 23, 2004, 09:46pm EDT Report Abuse
>> Re: HELP!!! ASUS A7N266-VM
The problem is that I have nothing installed, a CD writer, 1 HD, 2 soundcard SB PCI 128, a 56 k modem... thats it...

Mike Pacheco Jun 24, 2004, 10:40am EDT Report Abuse
>> Re: HELP!!! ASUS A7N266-VM
LOL...that is pretty sad..... Don't get me wrong, it could have something to do with your motherboard but the chances of that is minimal with such a low 12v rail. The odds are more likely that it IS your power supply causing the instability. You're motherboard eats only a little of that 12v power, most of it is powered by your 3.3v and 5v rails. BTW, how are those doing? What does your 12v rail look like from BIOS?

Anyway, head over to a local computer store, tell them about the instability and that you think it's the PSU. Maybe they can put in a working PSU on your system real quick and test it to remove all doubts?

BTW, if your system has already crashed a bunch of times already, you may have introduced another variable to your dilemma......Windows Corruption. Keep that in mind when testing...

Simon Dompierre Jun 24, 2004, 10:53am EDT Report Abuse
>> Re: HELP!!! ASUS A7N266-VM
I didn't know that the motherboard uses the 3.3v and the 5v only... Those 2 + the Vcore are really stable, it's only the 12V that freak... I check,and the 12V is only 18A... Maybe that's the problem... And about the windows corruption, I just reinstalled it, update the bios to 1007, and nothing changed.

Mike Pacheco Jun 24, 2004, 03:00pm EDT Report Abuse
>> Re: HELP!!! ASUS A7N266-VM
Just to clarify, your motherboard DOES use the 12v rail but it's minimal. For example, while it might eat up 2-3 amps of your 3.3v and 5v rails, it will only suck up .3 amps of your 12v rail. Your CPU eats, or should eat the majority of the 12v rail. If what you say is true, perhaps the 12v rail is not supplying enough juice (amps) to your CPU? and hence the lockups and freezing. (Probably if you underclock your CPU then it won't require as much juice and it will run a little more stable, although I don't recommend this route. Go with another PSU.) ;)

Regarding the Windows Corruption, I was only mentioning to take that into consideration AFTER you've replaced your power supply and begin testing it again. While you may have fixed one issue, another one may have surfaced during the random crashing and freezing of your previous problem. Just take it into consideration after replacing the power supply.

Milt Jun 24, 2004, 04:29pm EDT Report Abuse
>> Simon
I agree with Mike... you need a better PSU.

FWIW the 12.0v line supplies current for ALL your drives (HD, CD, DVD, Floppy), ALL of your fans and case fans, AND your CPU.

Try unplugging the power leads to your CD and floppy, and see if things improve.

Simon Dompierre Jun 24, 2004, 05:26pm EDT Report Abuse
>> Re: HELP!!! ASUS A7N266-VM
OK, thanks guys, I'll change it as soon as possible! I was looking at the Antec SmartBlue 350Watts ATX, what do you think about that?


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