Problem powering up computer. Please HELP!

C

Cybore

Weaksauce
Joined
Mar 11, 2005
Messages
90
I recently purchased a 430w antec true power through ebay with the specs:
+3.3V @ 28.0A, +5V @ 36A, +5VSB @ 2.0A, +12V @ 20A, -5V @ 0.5A, -12V @ 1.0A
I plug everything in and when I turn it on either:
1)my system barely boots up -monitor works, video card + fan works, cpu fan works, fans attached to the motherboard don't work though.
2)my system shuts on and off repeatedly until I turn the power supply off from behind.

What could be the problem?
My specs:
Amd 64 3000
Abit Av8-n guru
PNY 6800gt
Kingston hyper x dual ddr400
Dvd rw drive and floppy drive.
Thermaltake tsunami with its stock fans.

I am thinking it probably is the power supply but I want to make sure before throwing out another $70. Kinda pissed because item was stated as new. Does $65 shipped for a fortron 530 sound like a good deal?
 
The Power Supply is almost definitely NOT your problem--- it's from a quality company and more powerful than your system even requires. You just perfectly described a short circuit. Take your system out of the case and test it on a nonconductive surface without static electricity, like a wooden table, or just set the components on top of the case INSULATED BY AN ANTI STATIC BAG OR THE MOTHERBOARD BOX, plug it into the power supply and case power button, and fire it up again.

Remove all RAM except one stick. Ensure the CPU heatsink is mounted properly, if the CPU gets too hot it will cut off the system as well. Also make sure your CPU fan is plugged into the CPU FAN header near the socket-- if there is no fan sensed by that probe, the system will cut off to prevent overheating. You must have a fan attached to it in most cases.
 
The outside of an Anti static bag can store static electricity...i would suggestion card board...or the foam motherboard insert.
 
Thanks for providing me a quick and logical explanation. I never really thought I would have a problem of that sort, but I will try and do as you say and see what happens. The thing is that TT tsnumani's front cover is made of aluminum and I believe that could mean trouble. I don't know exactly why this is happening. The thing is that it somtimes boots and sometimes it doesn't. When it does boot, everything works well except for for fans attached to the motherboard as I told you earlier. When I connect those fans through molex I think the system has a higher failure rate and has a higher chance to power up/power down in loop. What should I check for in short circuit? I don't want anything ruined in my new computer.
 
You probably have a screw or poorly mounted standoff touching a circuit on your motherboard. Remove the board and cards from it and test them on another surface for a while and see if it stops happening and if fans work properly. If not, something is more than likely wrong with your motherboard and you should get it replaced.
 
Epicenter said:
The Power Supply is almost definitely NOT your problem--- it's from a quality company and more powerful than your system even requires. You just perfectly described a short circuit. Take your system out of the case and test it on a nonconductive surface without static electricity, like a wooden table, or just set the components on top of the case INSULATED BY AN ANTI STATIC BAG OR THE MOTHERBOARD BOX, plug it into the power supply and case power button, and fire it up again.

Remove all RAM except one stick. Ensure the CPU heatsink is mounted properly, if the CPU gets too hot it will cut off the system as well. Also make sure your CPU fan is plugged into the CPU FAN header near the socket-- if there is no fan sensed by that probe, the system will cut off to prevent overheating. You must have a fan attached to it in most cases.
Click to expand...

I agree with Epicenter. I would also advise not to buy from ebay. Sure you may save a little bit of money but I personally will never buy from ebay. Just me now. Don't want to offend anyone. Newegg is where you'll want to do all of your shopping.
Good luck.......
 
Figured it out, the power supply was defective. I did as I was told; it seems like there wasn't a short circuit lucky me.
 
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