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Why my cpu power plug is melting

Last response: in Components
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February 7, 2012 8:57:14 AM

im usin asus m4 motherboard & 2gb nvidia geforce graphics card& 8gb ram
i've changed the cpu main 3 pin power plug thrice but every time i do one pin in the plug turns black as it melts down
is it the spyke? or mother board?
i have changed the power options in windows 7 to high performance coz im running avid media composer

More about : cpu power plug melting

a b à CPUs
February 7, 2012 9:14:25 AM

Do you mean the CPU fan header?
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a b ) Power supply
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a c 80 à CPUs
February 7, 2012 9:25:54 AM

I hope you don't mean the plug that goes into the PSU at the back.

If you do its bad PSU, or really poor quality leads. Take it to a shop unless you know how to change a PSU.

Is this weren't potentially so serious I'd call troll.
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February 7, 2012 9:34:00 AM

This is nothing to do with power options. Remove the Power Supply from the PC, sounds like its faulty to me.
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a b ) Power supply
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a b à CPUs
February 7, 2012 10:59:43 AM

If plug is melting - HIGH power dissipation at pin/socket.

Either excess current thru the pins or the Pin (or socket) has become oxidized and is dropping excess voltage across the male/female pin.

As Asked, is this a Fan Pllug as "power to MB" is a 4/8 pin and/or a 20/24 Pin connector.

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a c 274 ) Power supply
a c 117 V Motherboard
a c 120 à CPUs
February 7, 2012 11:50:42 AM

Yep whatever psu you are using has a problem.
Replace it.
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a b ) Power supply
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a c 80 à CPUs
February 7, 2012 5:13:35 PM

I wonder if he's still with us?
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February 12, 2012 12:03:33 PM

13thmonkey said:
I hope you don't mean the plug that goes into the PSU at the back.

If you do its bad PSU, or really poor quality leads. Take it to a shop unless you know how to change a PSU.

Is this weren't potentially so serious I'd call troll.


YEAH, its the plug tht goes into the PSU at back, if its the problem withe psu i'll change, but the other end of the plug is melting( 3 pin plug which goes to the main power supply)
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February 12, 2012 12:08:21 PM

silverliquicity said:
Do you mean the CPU fan header?

no, the plug of the psu's power supply cable wire
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February 12, 2012 12:12:18 PM

RetiredChief said:
If plug is melting - HIGH power dissipation at pin/socket.

Either excess current thru the pins or the Pin (or socket) has become oxidized and is dropping excess voltage across the male/female pin.

As Asked, is this a Fan Pllug as "power to MB" is a 4/8 pin and/or a 20/24 Pin connector.

its not inside the cabinet or on the cabinet its the main wire plug tht goes to UPS
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a b ) Power supply
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a c 80 à CPUs
February 12, 2012 12:38:56 PM

its the 'wall end' thats melting?

you are in the uk yes? if its plugged into the ups it sounds like thats at fault to me.
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February 12, 2012 2:11:35 PM

davcon said:
Yep whatever psu you are using has a problem.
Replace it.

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February 12, 2012 2:13:55 PM

13thmonkey said:
its the 'wall end' thats melting?

you are in the uk yes? if its plugged into the ups it sounds like thats at fault to me.

ok wat do u recommend?
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a b ) Power supply
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a c 80 à CPUs
February 12, 2012 2:42:02 PM

this is important/dangerous enough that i would not recommend any experimenting to find out the source unless you are an electrician, in which case you wouldn't be here asking, you'd be telling us whats wrong.

something is seriously up here. you need to find a professional to help you, can you post a piccy of the melted plug?
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a b ) Power supply
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February 12, 2012 2:43:10 PM

Ditch the UPS
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February 12, 2012 3:47:07 PM

13thmonkey said:
this is important/dangerous enough that i would not recommend any experimenting to find out the source unless you are an electrician, in which case you wouldn't be here asking, you'd be telling us whats wrong.

something is seriously up here. you need to find a professional to help you, can you post a piccy of the melted plug?

heres the pic
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a b ) Power supply
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February 12, 2012 3:54:34 PM

@13thmonkey, watch your language.
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a c 1197 ) Power supply
a c 222 V Motherboard
a c 107 à CPUs
February 12, 2012 4:17:07 PM

awin10 said:
heres the pic

It sure looks like a problem with the AC outlet that you're plugging it into.

It looks like the loose contact on that leg is causing arcing and heating it up enough to melt it.
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a b ) Power supply
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a c 80 à CPUs
February 12, 2012 5:07:09 PM

Sorry mouse, trying to express the seriousness of the situation.

looks like the socket in the UPS is the problem. Once that pin has gotten dirty with carbon it will only get worse.
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a b ) Power supply
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a b à CPUs
February 12, 2012 5:45:49 PM

13thmonkey said:
Sorry mouse, trying to express the seriousness of the situation.

I understand that but please try and do so without resorting to the kind of language that admin have asked us to clamp down on, ta v.much.
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a b ) Power supply
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a c 80 à CPUs
February 12, 2012 7:28:52 PM

Mousemonkey said:
I understand that but please try and do so without resorting to the kind of language that admin have asked us to clamp down on, ta v.much.


no problem
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February 13, 2012 12:29:02 AM

13thmonkey said:
no problem

leave the language prob man...! heres no prob with that.
So if its the ups im takin it to the shop along with the molten plug.
im just asking u if there is any problem with the psu or any component which may be pulling extra power into the machine.thts why i mentioned all the power ops and stuff.
Thank you and all of ya who responded well.
thx
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Best solution

a b ) Power supply
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a c 80 à CPUs
February 13, 2012 9:41:14 AM

that part of the plug is a solid brass lump, the copper wire in the cable would melt first if it were pulling too much power. My thought is that the socket itself is high resistance and therefore causing heat to build up. Also check with your shop that the 3A plug that you mention is enough, 3A at 240V is only 720W, at 120V its only 360W, so you probably need more than 3A plug, but thats typically a fuse issue, the physical plug would be the same (in the UK at least).
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February 21, 2012 11:54:18 AM

13thmonkey said:
that part of the plug is a solid brass lump, the copper wire in the cable would melt first if it were pulling too much power. My thought is that the socket itself is high resistance and therefore causing heat to build up. Also check with your shop that the 3A plug that you mention is enough, 3A at 240V is only 720W, at 120V its only 360W, so you probably need more than 3A plug, but thats typically a fuse issue, the physical plug would be the same (in the UK at least).

THANX TO ALL
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a b ) Power supply
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a c 80 à CPUs
February 21, 2012 11:55:32 AM

is it fixed? is it safe?
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February 23, 2012 5:26:54 AM

Best answer selected by awin10.
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February 23, 2012 5:32:32 AM

13thmonkey said:
is it fixed? is it safe?

YA fixed, I just tried with my pal's old ups and it works just fine.
so i figured the problem is ups, i now hav to take the ups to the store
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!