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Asus Sabertooth 990fx wont power up - Page 3

post #21 of 33
Its going to most likely be one of the standoffs, You will need to look real close at each.
Try setting the board up differently with the standoffs.
Take all stand off out but the 4 corners & test.
post #22 of 33
Thread Starter 
Quote:
Originally Posted by TheWolf View Post
Its going to most likely be one of the standoffs, You will need to look real close at each.
Try setting the board up differently with the standoffs.
hmm, but why would one psu have an issue while the other one doesn't?
I would think if it's a standoff issue both PSU's would have an issue.
Not to mention i've just put all brand new standoffs in the case before I started on this -again- today.
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post #23 of 33
Are you using the correct 4+4 plug. I know some PSU have more than one.
I'll have to go to the shop "out back my house" to have a look at my CM 1200w.
But I think it has 2x 8 pin plugs.

Edit: you can also test using only a 4 pin 12v. if the 4+4 will split.
Nope not the CM 1200w Silent Pro Gold, its another PSU I have that has dual 4+4.

Have you tried disconnecting all the case wires & try starting it with a screw driver by jumping across the pins?
I didn't note if your board has a on board power on switch?
Edited by TheWolf - 7/30/11 at 11:02am
post #24 of 33
Thread Starter 
Quote:
Originally Posted by TheWolf View Post
Are you using the correct 4+4 plug. I know some PSU have more than one.
I'll have to go to the shop "out back my house" to have a look at my CM 1200w.
But I think it has 2x 8 pin plugs.

Edit: you can also test using only a 4 pin 12v. if the 4+4 will split.
Nope not the CM 1200w Silent Pro Gold, its another PSU I have that has dual 4+4.

Have you tried disconnecting all the case wires & try starting it with a screw driver by jumping across the pins?
I didn't note if your board has a on board power on switch?
I tried both 4+4 plugs on my PSU, no dice.
My board has no on board power switch, I was just hooking up my cases power button to the mobo while trying to power it on out of case.

I've got my 650w PSU in case and running the machine ATM. I'm going to experiement with my old mobo and the 1000w and see if I'm getting the same problems now. Maybe something went nuts with it between the time I had it tested and now.
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post #25 of 33
Try your CM 1000W with other components or on your fiends system to see if it boots up.
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post #26 of 33
Quote:
Originally Posted by blampars View Post
I tried both 4+4 plugs on my PSU, no dice.
My board has no on board power switch, I was just hooking up my cases power button to the mobo while trying to power it on out of case.

I've got my 650w PSU in case and running the machine ATM. I'm going to experiement with my old mobo and the 1000w and see if I'm getting the same problems now. Maybe something went nuts with it between the time I had it tested and now.
Logic would dictate that the by testing your PSU, it became damaged. Is this a possible scenario?

Before test - Fine

During test - Passed

After test - Not working.
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post #27 of 33
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Umm, yeah kinda. Doesn't explain how or why it ran that msi board I had for a week before I returned it though..
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post #28 of 33
Quote:
Originally Posted by blampars View Post
dude, this is nuts lmao

I've FINALLY figured it out.

It's my Cooler Master Silent Pro Gold 1000w PSU

I crawled into the attic and dug up my old Corsair 650w psu and the thing fired right up. I don't understand it, I just had this CM 1000w tested the other week before I decided to upgrade. It's run my old mobo just fine since last September when I got it (the psu), and it ran that MSI 990fx board just fine up until wednesday when I returned that thing.

Now if I pull everything out of the case, it runs it. If I leave the components in and pull the PSU out, it wont start up. This is twisted.

Anyone have -any- insight into how or why this might be? I'm no electrician heh.
Sounds like your CM PSU is building static in the case and shorting things out, which is why it works fine outside the case. The Corsair PSU works in or out, because it's functioning correctly.
post #29 of 33
It's unlikely but not impossible, there's a 50/50 chance it might be doing just that, building static.
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post #30 of 33
Thread Starter 
I'm just going to RMA the damn thing. It's got a 5 year warranty on it and this 650w should hold me over until I get a new one. :-/

BTW the LAN on the sabertooth is *dead*. No lights on, nobodys home. Yes it's enabled in the bios and the drivers are installed. I shoved a wireless adapter in and I'm good. I can't bear to take this machine apart once more lol.

I think all this is punishment for charging a complete system upgrade to my credit with the thought of paying it off later.
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