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MultiThreaded Mayhem MTMII 2013: $1000 in cash prizing! And Motherboards! - Page 133  

post #1321 of 1709
Quote:
Originally Posted by FireBean View Post


I have already checked and there were some pins welded to the CPU. I got a used P67 Sabertooth and 2500k from someone on hardforum. I just got it together and now I cannot the 7950 to light the monitor. A spare GT210 lights it up just fine. I need to check the PSU now. I'm starting to think that the ESD might of traveled through the AC port. doh.gif

I'm always getting shock when I get out of this car. I dunno why.

No no something else went wrong.

Static electricity doesnt weld pins.
     
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post #1322 of 1709
Quote:
Originally Posted by EpicAMDGamer View Post

No no something else went wrong.

Static electricity doesnt weld pins.

That's too bad that had to happen, it looked like a nice rig. Love the lian li cases like that.
If it wasn't static , I sure hope it reveals itself before ruining more hardware frown.gif.

My understanding of ESD is pretty limited but I've always believed it could carry a lot of volts but lacked any significant amperage.
If that's true it would take a whale of an ESD to weld anything, am I correct in my beliefs?
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post #1323 of 1709
Quote:
Originally Posted by cssorkinman View Post

My understanding of ESD is pretty limited but I've always believed it could carry a lot of volts but lacked any significant amperage.
If that's true it would take a whale of an ESD to weld anything, am I correct in my beliefs?
No, it doesn't lack amperage, it just lacks power. It can put a massive amount of current through something for a picosecond, but it's not going to damage anything.
post #1324 of 1709
Quote:
Originally Posted by Art Vanelay View Post

No, it doesn't lack amperage, it just lacks power. It can put a massive amount of current through something for a picosecond, but it's not going to damage anything.

I beg to differ.

Capacitors can chuck out 200 amps for a picosecond, capacitors can weld things.

Static electricity is known to have far less than a few milliamps.
     
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post #1325 of 1709
Quote:
Originally Posted by EpicAMDGamer View Post

I beg to differ.

Capacitors can chuck out 200 amps for a picosecond, capacitors can weld things.

Static electricity is known to have far less than a few milliamps.
This video shows the calculations that I am too lazy to do. The current from static shock can be in the lethal ranges for an extremely small amount of time.
post #1326 of 1709
Quote:
Originally Posted by Art Vanelay View Post

This video shows the calculations that I am too lazy to do. The current from static shock can be in the lethal ranges for an extremely small amount of time.


This is not static electricity shown in this video. This is the charge that is built up from a high voltage transformer in a tv known as a flyback.


And no static shocks are not lethal. But let's say they were lethal, they'd have to be about 6miliamps. Do you think 6 miliamps can weld things?


I know what I'm talking about.
     
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post #1327 of 1709
Quote:
Originally Posted by EpicAMDGamer View Post

This is not static electricity shown in this video. This is the charge that is built up from a high voltage transformer in a tv known as a flyback.

And no static shocks are not lethal. But let's say they were lethal, they'd have to be about 6miliamps. Do you think 6 miliamps can weld things?
You didn't actually watch it, did you?

Also, the calculation, for static shock, in the video was 8 amps.
post #1328 of 1709
I've been welding for 5 years, on my MIG (wire feed) it takes about 15 amps to actually fuse metal together... granted that is mild steel... I think it's safe to say that the pins weren't "welded" from the static shock but from some other event. It takes a lot longer than a picosecond for the metal to fuse like that. Most likely the previous owner overheated the chip.

Now can we get back to the benchmark competition? I wanna see some more FX results!!!
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post #1329 of 1709
Then what else could of caused it? Here is what I did. I was at a LanParty and decided to take it home. It was freaking 10F outside. So, I let the computer get to room temperature before taking it out to the car. Set it in the card, got in, POP.
    
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post #1330 of 1709
Quote:
Originally Posted by FireBean View Post

Then what else could of caused it? Here is what I did. I was at a LanParty and decided to take it home. It was freaking 10F outside. So, I let the computer get to room temperature before taking it out to the car. Set it in the card, got in, POP.

The capacitors in the psu could have had enough charge to ''weld'' the cpu to the socket, I think.

Also small update: http://www.3dmark.com/3dmv/4537927
Edited by Kasp1js - 1/27/13 at 1:11pm
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