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Melted EATX connector on my motherboard

post #1 of 8
Thread Starter 
tl;dr: One of the pin in the EATX connector melted. Computer just shut down, and kept restarting again and again (like when there's no power to the CPU) and I could smell burn plastic. My question is, how likely do you think it is that CPU died with it? I have no way to test that, and frankly I don't want to waste money (and especially time) sending first Motherboard and then CPU to retailer RMA separately.

Here's little more details on what happened and what lead to it:

When I was installing the board for the first time I recall that it was strange the computer wouldn't boot up, I had both 4pin ATX connectors plugged in properly (as Corsair PSU make them modular, splittable). So I looked in the manual of the board and tried only connecting one 4pin (which according manual it should be ok). This seemed to fix the issue.

Two months later it died. I noticed that I connected it wrong, only two of the four pins were in it, the other two were outside. Stupid mistake that wouldn't have happened if I weren't too lazy to uninstall that big D14 cooler first before fixing it. I couldn't see behind properly behind the cooler when plugging in the ATX connector again. I connected it like this :


Edited by Creyok - 5/19/11 at 3:34pm
post #2 of 8
The board is most likely heavily damaged because of the massive amount of current getting forced through that single wire. The PSU most likely suffered damage as well, but the processor is probably fine.
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post #3 of 8
Quote:
Originally Posted by Cyrious View Post
The board is most likely heavily damaged because of the massive amount of current getting forced through that single wire. The PSU most likely suffered damage as well, but the processor is probably fine.

post #4 of 8
Quote:
Originally Posted by Khaotik55 View Post
Voltage != Current

Lets say his processor pulls 200W full tilt (not going for precision here). At 12V, that is demanding approx 16 amps through the processor power cable. Trying to shove that much current through a single line will result in overheating and damage. Through 2 lines will reduce the amount of heat greatly, as each line is only contending with about 8 amps. Using 4 lines will require each one to only carry 4 amps each.
His fault was that he accidentially used only one line, resulting in all that current melting the connector and possibly part of the board.
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post #5 of 8
Thread Starter 
Visible damage on the motherboard is only that one pin in that EATX connector. No visible damage outside of it.

Is my understanding correct that it actually slowly melted over time? It lasted 2 months before it died. According to specification a 2500K processor draws out about 10-100W of power.

Thank you for your response.
post #6 of 8
Quote:
Originally Posted by Creyok View Post
Visible damage on the motherboard is only that one pin in that EATX connector. No visible damage outside of it.

Is my understanding correct that it actually slowly melted over time? It lasted 2 months before it died. According to specification a 2500K processor draws out about 10-100W of power.

Thank you for your response.
was the system under moderate/heavy load when it died? low load is fine, but having it under a high load, especially for an extended period of time will cook it.
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post #7 of 8
Thread Starter 
It was in low load (Windows idle, web browsing etc.) when it died. But during those 2 months it endured few 12+ hours Prime95 blend tests, overclocked
post #8 of 8
Quote:
Originally Posted by Creyok View Post
It was in low load (Windows idle, web browsing etc.) when it died. But during those 2 months it endured few 12+ hours Prime95 blend tests, overclocked
that would do it
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