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power supply problem i think

This is a discussion on power supply problem i think within the RAM and Power Supply Support forums, part of the Tech Support Forum category. Right, so I was moving my PC upstairs I plug in all my USB's, my monitor and stuff then I

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Old 10-20-2009, 10:25 AM   #1
Join Date: Oct 2009
Posts: 1

Right, so I was moving my PC upstairs I plug in all my USB's, my monitor and stuff then I plug in the power cable into the socket, and then BOOM i see a spark and a little crack I quickly unplugged it, to my dismay I smelled a minor smell coming from the back of the power supply, Any ideas what to do?


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Old 10-20-2009, 12:53 PM   #2
Join Date: May 2009
Location: Illinois
Posts: 51,675
OS: XP Pro-7

I would have to assume the PSU has failed. Hopefully, it didn't damage any other hardware.
Quality PSU's generally don't do any harm but cheap PSU's frequently take other hardware with them.
PC Specs?
Prebuilt- Brand name & Model Number
Custon Built-Brand & Model of Mobo-CPU-RAM-Graphics-PSU
When you get a new PSU, bench test.

Remove everything fro the case.
Set the motherboard on a non conductive surface. The motherboard box is perfect for this. DO NOT PLACE THE MOTHERBOARD ON THE STATIC BAG! It can actually conduct electricity!
Install the CPU and heat sink.
Install 1 stick of RAM.
Install the video card and attach the power supply connection(s) to the card if your card needs it.
Connect the monitor to the video card.
Connect the power supply to the motherboard with both the 24pin main ATX Power connection and the separate 4 or 8 pin power connection.
Connect any power connections required by the GPU.
Connect power to the power supply.
Do NOT connect ANYTHING else. Make sure you have the power connector on the CPU fan connected.
Use a small screwdriver to momentarily short the power switch connector on the motherboard. Consult your motherboard manual to find which two pins connect to your case's power switch. Then touch both pins with a screwdriver to complete the circuit and boot the system.

If all is well, it should power up and you should get a display. Then assemble the parts into the case and try again. If the system now fails to boot, you have a short in the case and need to recheck your motherboard standoffs.

If the system does not boot after this process, then you most likely have a faulty component. You'll need to swap parts, start with the power supply, until you determine what is defective.

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