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Melting 24 pin ATX conectors

post #1 of 5
Thread Starter 
This seems to be a problem that quite a few of are dealing with. What is the cause of this problem? It does not seem to be related to and specific hardware either, and both times it has happened to me i was not doing anything stressful on my pc.
Anyone else that has had this problem have any input on how to stop it from happening?
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the puter
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post #2 of 5
overvolting components typically on motherboards not designed to do so. Higher end boards typically have 1 or even 2, 6 pin power connectors for cpu, then even another 6 pin for pci-e. This helps give the board the power it needs safely. Lower end boards usually don't have these features thus you end up with large amounts of current being drawn through the 24 pin which causes the melting. Hope that answers your question
Edited by strap624 - 2/26/11 at 2:24pm
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post #3 of 5
From the perspective of an engineer who has melted my share of plastic in my day: Too much current.

Does your motherboard have auxiliary power connecters? I think mine had a 24pin and a couple smaller connectors to split the load.

I think thats a bad sign, potentially hazardous to the rest of your board. On PCB's I make, melting plastic can be quickly followed by traces peeling up, components releasing the "magic smoke", etc. If you have other power connectors make sure they are connected. If not, I would back of the OC.

But thats just from a general PCB perspective, I've never seen this on a mobo so I can't perfectly predict the outcome. Mobo's are typically higher quality PCB's than I'm used to building.
Edited by arcticTaco - 2/26/11 at 2:37pm
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post #4 of 5
Is it more prevalent on systems with multiple graphics cards?

It could be that the PCIe slots are asking too much +12V current of the ATX connector. I doubt it has to do with CPU or northbridge overclocking as those are powered from the ATX12V/EPS12V connector.
post #5 of 5
Thread Starter 
My board has aux connectors, which I have plugged in yet this has happens 2 times..
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