Tried to switch cases

[RKS]

Everything was working but I tried to switch cases and now the following issue occurs:

I have the PSU hooked up and the mobo installed. When I power the system the stand-by light on the mobo lights up but nothing else happens. Even the PSU fans do not power up.

Where do I start diagnosis? Thanks for any help.

 

[mechBgon]

1) what brand & model of motherboard is it?

2) do you (duh) have the case's Power Button wire plugged into the correct pins on the motherboard?

 

[stevty2889]

You did use standoffs to mount the motherboard to the new case right? Is the only switch you made from one case to another case? Using the same power supply or a differant one?

 

[spyke136]

are all of the connections in the motherboard in tightly? thats the only thign i can think of.

 

[PawNtheSandman]

I bet there is a loose screw or standoff causing this.

 

[RKS]

Antec TP 480 psu
Intel 915 PBL mobo

tried to move everything from an old server case to an Antec P180. (nothing new added/removed)

I checked the front panel plugs a few times. (i'll try them again)

The case has a few extra stand-offs but I don't know if they are removable. The rest of the stand-off are screwed in snugly to the mobo.

The psu seems to be connected correctly to the mobo.

edit: The only thing I have connected is the 20 pin connector and the seperate 4 pin connector on the mobo.

 

[mechBgon]

If the mobo has extra standoffs that are located under the mobo, you need to get them out. One standoff, one mobo hole, one screw. One standoff, no hole, one short circuit.

 

[RKS]

Originally posted by: mechBgon
If the mobo has extra standoffs that are located under the mobo, you need to get them out. One standoff, one mobo hole, one screw. One standoff, no hole, one short circuit.

I tried to remove it but it seems to be riveted in there. I also checked to see if the stand-off was actually touching any circuits but it seems to be against just the board but no metal.

Could this still be the problem? I guess I'll try to cut the stand-off off.

 

[cuti7399]

try it outside of the case. if that work, then it's the stand off that causing the short. if the stand off are not removable, then use plastic or paper washer to cover between the mobo and case. good luck

 

[RKS]

Originally posted by: cuti7399
try it outside of the case. if that work, then it's the stand off that causing the short. if the stand off are not removable, then use plastic or paper washer to cover between the mobo and case. good luck

same results, the stand-by light on the mobo comes on but nothing else.

If I leave the mobo dis-connected for a few hours and re-connect and turn on the psu the cpu fan spins for a second or two.

 

[stevty2889]

Go back down to the bare minimums with the motherboard outside of the case, cpu/heatsink and fan, 1 stick of ram, video card, disconnect everything else. You may even want to try with the power supply outside of the case.

 

[RKS]

Originally posted by: stevty2889
Go back down to the bare minimums with the motherboard outside of the case, cpu/heatsink and fan, 1 stick of ram, video card, disconnect everything else. You may even want to try with the power supply outside of the case.

I took the psu and the mobo out of the case and put them both on a cardboard box.

The mobo has no cards installed (not even video), 2 sticks of ram, CPU and HSF.

I still only get a stand-by light. Do I need a video card to see if the psu is functional?

I think I am almost at the point of figuring out whether it is a psu or mobo/cpu issue and going from there.

Anybody know how an Antec RMA works if I can't find the receipt?

I'll also need to check out the RMA for an OEM Intel chip/mobo configuration.

I might even get rid of my new P180.

I told my 8 month pregnant wife I would have her computer up an d running in a few hours so she could do the bills and print some pics for the family. That was a few days ago and now I'm on her sh!tlist.

 

[Fern]

The mobo has no cards installed (not even video)

It won't boot without the gfx card installed. Put it in and try again.

Without the gfx card, the best you can hope for is a "warning" beep(s).

Fern

 

[stevty2889]

It should still turn on without the video card, just won't get a post. Sounds a lot like the power supply is no go, try with just 1 stick of ram though, and might want to re-seat the cpu.

 

[RKS]

Originally posted by: stevty2889
It should still turn on without the video card, just won't get a post. Sounds a lot like the power supply is no go, try with just 1 stick of ram though, and might want to re-seat the cpu.

tried it with 1 stick and no sticks with the same results.

Do you think I need to reseat the cpu if there is a big a$$ Zalman HSF on top? Wouldn't the psu fans would still spin up even if the CPU was not seated properly (very unlikely)?

 

[Fern]

Check to make sure the heatsink fan plug-in is connected to the mobo header (it may have come loose in the transfer), and

When I power the system the stand-by light on the mobo lights up

Umm, possibly a clue here. AFAIK the standby light should always be on, unless you unplugg the PC from the wall outlet or turn off the PSU with the rocker switch on back. Sounds like something is wired up incorrectly.

Fern

 

[RKS]

Originally posted by: Fern
Check to make sure the heatsink fan plug-in is connected to the mobo header (it may have come loose in the transfer), and

When I power the system the stand-by light on the mobo lights up

Umm, possibly a clue here. AFAIK the standby light should always be on, unless you unplugg the PC from the wall outlet or turn off the PSU with the rocker switch on back. Sounds like something is wired up incorrectly.

Fern

The HSF connection has been checked a few times.

As far as the light, you are right. It stays on until I unplug the PSU from the mobo or turn it off from the switch in the back.

If I plug in and turn on the PSU after a few hours the PSU fan and the HSF oth spin for a second or two and then just stop. Not sure if that helps in the diagnosis or not however.

 

[Fern]

K, had another thought. Maybe try to get the PSU to fire up on it's own. May give an indication whether it's dorked or not. (Or just try in another system)

Sorry, but can't remember ATM which to wires to short etc. I see it posted every once in a while. Might find it with a search.

Fern

EDIT: Uhh.. Did you try clearing the CMOS yet?

 

[RKS]

Originally posted by: Fern
K, had another thought. Maybe try to get the PSU to fire up on it's own. May give an indication whether it's dorked or not. (Or just try in another system)

Sorry, but can't remember ATM which to wires to short etc. I see it posted every once in a while. Might find it with a search.

Fern

EDIT: Uhh.. Did you try clearing the CMOS yet?

I might pick up a psu tester this weekend. Knowing myself I would be electricuted trying to short the wires.

Yes, I did try to reset the CMOS.

 

[cuti7399]

might by silly but did u plug the 12v plug in? thought i would bring it up because i just tested an a64 combo and forgot to plug that in.....duh

 

[RKS]

the 4 pin square plug? yes