Question about ASUS K8V-MX Motherboard

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Smoke came out from my pc power supply, my mb is toast?

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Very possible. Try a new one.

Posted on Sep 12, 2009

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Fans not working in hp pavilion p7 1003w


Are you sure they are getting power? Check by using a plug off of an old fan. Power it up and read the voltage on the red and black wire. Should be 12 volts. Check by swapping SYS FAN With JP1. If there is no voltage then I would say your looking for a burnt or bad voltage regulator on the board. It could also be a bad power supply. Use a Q-tip to first spin the fans with the PC off. Do they spin freely?
25386666-d5sfsixxp3s0mc4y4voabxpt-2-0.gifMother Board
If they dont, replace them. If they do spin free, turn on the PC.(Make sure to go into the bios setup so id doesnt continue to boot.) Try to spin the fans now. If the dont spin free, it means there is voltage there, but the fan is toast. Replace them.
FOR A QUICK FIX: If it is the power supply or MB . They sell an adapter that plugs into the HD power. get as many as you need and a power splitter or two depending in your power supply configuration. Plug the fans into the adapters then go into the bios setup and disable the fan warning. The fans will be on high at all times. The MB will have no control over the speed. Good luck. Hope this helps.

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It is more than likely the power supply that is faulty. Newer PSU's have a 5volt supply missing, this means that some older boards will not run with the new PSU's. Try and find an exact match for your older supply but with a better power rating, if that is what is required.

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I plug in the power lead and it makes a blowing noise the a spark comes out the back


The power amp blew... There is a marginal insulation in a circuit board that wipes out the rear-most power amplifier. Usually accompanied by sparks and smoke.

If the lights still come on for the effects window, then the power supply is OK and you are VERY lucky... have the unit serviced immediately.

If no lights come on now, the the power supply is toast as well. There will be about 20 components fried.

I know as I have repaired 4 of these... no fun, believe me!

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your power supply must be exact and both power connections to the motherboard must be connected. the green light will come on if voltage is supplied but will turn on a low voltage alarm which is a buzzing sound. or it just wont do anything

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System wouldn't power up and when i replaced the power supply it now powers up without pushing the power button but does not even enter bios (screen is blank as if no output). Won't spin up or read Windows...


You've probably reset the bios, so we won't belabor the point. Sounds like the motherboard is toast. You replaced the power supply, and that was probably the culprit, but it took out the MB as well.

A 478 board is older, but you should be able to eBay one with similar specs.
http://www.gigabyte.com.tw/Products/Motherboard/Products_Spec.aspx?ProductID=1863

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Pushing power switch to turn PC on, nothing. Found C1 capacitor on the supply printed circuit blown apart. 10uf 50v. What is the chance this took out the motherboard? How can I tell if it took the...


Chances are about 35% it toasted your MB 65% it didn't. REplace it and see if your PC boots and run properly. If it does the MB is more than likely good.

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1 Answer

System wont power on unless mb power connector on mb is reset


by mb pwr connector do you mean the swich on the pc case that you press to turn it on or do you mean the large block connector form the power supply ?

If you mean the case switch then you have a faulty one that is sendinga constant signal and locking up the power supply

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Remove the memory chip. It was probably either not installed properly or is not compatible with your PC. That should fix your problem.

Apr 25, 2009 | Computers & Internet

1 Answer

Is my pc fixable?


Hi!

The might be so that you toasted the whole pc, but i think you toasted the PSU. If you have another psu you can try to change it and see if the pc starts, or if you can borrow one from a friend. If it dosent starts then your motherboard is toasted to.
But i bellive that its only the psu.

Good luck
Nic

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1 Answer

Power supply not working?


To see if power supply works
unplug the psu from the motherboard and drives
then plug the power cord into psu and wall
the fan should come on letting you know that it works.

you can also get a multimeter and check each individual connector on the 20/24 pin connector to motherboard.
check the psu docs for the correct voltages to each pin

If you smelled smoke then chances are that something may have gotten toasted.
remove all expansion cards and try to turn on computer if nothing happens then the motherboard may have gotten toasted.
Check the motherboard and expansion cards along with memory for shorts and burn spots.

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