Closed Solved

Why my cpu power plug is melting

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
26 answers Last reply Best Answer
More about power plug melting
  1. Do you mean the CPU fan header?
  2. 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.
  3. This is nothing to do with power options. Remove the Power Supply from the PC, sounds like its faulty to me.
  4. 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.
  5. Yep whatever psu you are using has a problem.
    Replace it.
  6. I wonder if he's still with us?
  7. 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)
  8. silverliquicity said:
    Do you mean the CPU fan header?

    no, the plug of the psu's power supply cable wire
  9. 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
  10. 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.
  11. davcon said:
    Yep whatever psu you are using has a problem.
    Replace it.
  12. 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?
  13. 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?
  14. Ditch the UPS
  15. 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
  16. @13thmonkey, watch your language.
  17. 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.
  18. 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.
  19. 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.
  20. 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
  21. 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
  22. 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).
  23. 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
  24. is it fixed? is it safe?
  25. Best answer selected by awin10.
  26. 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
Ask a new question

Read More

Power Supplies Power Motherboards CPUs Components