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Tom's Hardware > Forum > CPU & Components > Power Supplies, Cases & Mods > [Solved] Why my cpu power plug is melting

[Solved] Why my cpu power plug is melting

Forum CPU & Components : Power Supplies, Cases & Mods [Solved] Why my cpu power plug is melting

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awin10   02-07-2012 at 11:57:14 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

Reply to awin10
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13thmonkey   02-07-2012 at 12:25:54 PM

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.

Message quoted 1 times
Reply to 13thmonkey
tobensg   02-07-2012 at 12:34:00 PM

This is nothing to do with power options. Remove the Power Supply from the PC, sounds like its faulty to me.

Reply to tobensg
RetiredChief   02-07-2012 at 01:59:43 PM

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.

Message quoted 1 times
Reply to RetiredChief
davcon   02-07-2012 at 02:50:42 PM

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

Message quoted 1 times
Reply to davcon
13thmonkey   02-07-2012 at 08:13:35 PM

I wonder if he's still with us?

Reply to 13thmonkey
awin10   02-12-2012 at 03:03:33 PM

13thmonkey wrote :

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)

Reply to awin10
awin10   02-12-2012 at 03:08:21 PM

silverliquicity wrote :

Do you mean the CPU fan header?


no, the plug of the psu's power supply cable wire

Reply to awin10
awin10   02-12-2012 at 03:12:18 PM

RetiredChief wrote :

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

Reply to awin10
13thmonkey   02-12-2012 at 03:38:56 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.

Message quoted 1 times
Reply to 13thmonkey
awin10   02-12-2012 at 05:11:35 PM

davcon wrote :

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


Reply to awin10
awin10   02-12-2012 at 05:13:55 PM

13thmonkey wrote :

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?

Reply to awin10
13thmonkey   02-12-2012 at 05:42:02 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?

Message quoted 1 times
Message edited by Mousemonkey on 02-12-2012 at 06:53:16 PM
Reply to 13thmonkey
awin10   02-12-2012 at 06:47:07 PM

13thmonkey wrote :

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[img]https://plus.google.com/u/0/photos/109769404391377115101/albums/5708306595497588193[/img]

Message quoted 1 times
Message edited by Mousemonkey on 02-12-2012 at 06:53:29 PM
Reply to awin10
Mousemonkey   02-12-2012 at 06:54:34 PM

@13thmonkey, watch your language.

------------------------------ http://img545.imageshack.us/img545/3995/bl11.gif
 Reply to Mousemonkey
ko888   02-12-2012 at 07:17:07 PM

awin10 wrote :

heres the pic[img]https://plus.google.com/u/0/photos/109769404391377115101/albums/5708306595497588193[/img]


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.

Reply to ko888
13thmonkey   02-12-2012 at 08:07:09 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.

Message quoted 1 times
Reply to 13thmonkey
Mousemonkey   02-12-2012 at 08:45:49 PM

13thmonkey wrote :

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.

Message quoted 1 times
------------------------------ http://img545.imageshack.us/img545/3995/bl11.gif
 Reply to Mousemonkey
13thmonkey   02-12-2012 at 10:28:52 PM

Mousemonkey wrote :

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

Message quoted 1 times
Reply to 13thmonkey
awin10   02-13-2012 at 03:29:02 AM

13thmonkey wrote :

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

Reply to awin10
13thmonkey   02-13-2012 at 12:41:14 PM
Best answer

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).

Message quoted 1 times
Reply to 13thmonkey
awin10   02-21-2012 at 02:54:18 PM

13thmonkey wrote :

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

Reply to awin10
awin10   02-23-2012 at 08:32:32 AM

13thmonkey wrote :

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

Reply to awin10
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