Build completely new rig and it’s not working

savak · Dec 26, 2005, 07:45 PM

I bought new, out of a box, components (Abit A8N sli, 1 gig ram, power supply, 3500ghz amd64, ATI x700, ninja box). I hooked everything together. When I hit the power button to boot up the system, poof, the power supply burned up (stinky smell came out of it).

So, I got a new power supply (Antec smart power 500w) and a new motherboard ( Abit kn8, socket 939 AMD 64 3500 with 24pins power). Hooked it up. Should work, right. .NOT. When I hit the power button nothing happens and I have High pitch sound from the power supply.

I hooked a different power supply that works in a different system and again the same high pitch sound comes up. It’s really weird.

I don’t know what the problem is. Any ideas?

ReDGuiTaR · Dec 26, 2005, 09:59 PM

your processor and/or graphic card might have been damaged the first time ...

H3X4D3C1M4L · Dec 26, 2005, 10:53 PM

Dead mobo.

Looks like it discharged some bad ass voltage on the mobo and fried it, probably something like 18 volts on a 12v line.

If it was a cheap noname PSU with no overvoltage protection it likely killed the parts.

Return them and just say it was defective as fast as possible.

ReDGuiTaR · Dec 26, 2005, 11:29 PM

but he changed the MoBo already ... only the proc and video card are the same ...

H3X4D3C1M4L · Dec 26, 2005, 11:41 PM

Well it probly still got fried.

If the power supply makes a whistling sound or a high buzz thats usually a sign of the mobo doing something wrong... but hey... it looks like something funky happened and now you've got a dead something...

Necrosis · Dec 27, 2005, 12:06 AM

I would first ask how much knowledge this person has with hardware. Secondly, if they made sure there wasn't any shorts any where.

savak · Dec 27, 2005, 03:18 AM

As redguitar mentioned, I replaced the motherboard with a brand new one.There isn't supposed to be any fried stuff. I didnt replaced the ram, video card, cpu and the box.

The weird part is, as I said before, I pulled out a working power supply from a diffrent system and hooked it up to the new system and the same hight pitch sound came out and nothing happened . When I put it back into the old system the power supply works fine.

Some tech told me, it might be some grounding issue with the box.

H3X4D3C1M4L · Dec 27, 2005, 09:07 PM

If you screwed the motherboard in with metal contacts, and the PSU connects to it, then its techncially grounded to the ground in your house.

If your house has grounding issues that could be why.

Considered buying a UPS and plugging into that?

savak · Dec 28, 2005, 11:08 PM

H3X4D3C1M4L · Dec 28, 2005, 11:18 PM

Why are you bumping....you know what you gotta try...

swimtech · Jan 1, 2006, 04:23 PM

OK, You know the power supply is good - to isolate any problems away from the box you could put together the mainboard, processor, ram, and video card (hook it up to a monitor too...) on a wooden table or other nonconductive surface (don't use the case) and see if the symptoms change. Don't hook up any drives or anything else. This test assembly will also tell you if you mounted the mainboard to the case the wrong way.

If it turns on and shows anything on the screen, you know you have a problem with the mainboard mounts or the case itself - turn it off by unplugging the power supply at the wall outlet. If you still hear the whine from the power supply and it doesn't start, then you still have a problem with one the components on the table in front of you.

Necrosis · Jan 1, 2006, 04:41 PM

With that whine happening I swear there is some thing shorted out. I know there is!

Another thing is to look at all your printer circuit boards, and areas where power comes in. If you see any burnt traces or scortch marks you've probably found the problem.

H3X4D3C1M4L · Jan 1, 2006, 04:59 PM

Also check capacitors for leaks or bulging.... I have heard of bad capacitors making whine noises