Solve : POWER PROBLEM?

1.	Solve : POWER PROBLEM?
Answer» I received a small shock one day while trying to turn off my computer when I hit the power button. I quickly disconnected the power cord and checked my ups. The ups was fine and when I went to turn the computer on again, I connected the power plug and the computer went on without me touching the power button for about 5 seconds and then turned off. I disconnected the power cord and checked inside the computer to check for any problems but it looked OK so I tried connecting the power cord again and again the computer did the same thing, it went on for about 5 seconds without me touching the power button. I then replaced the power supply and the same thing happened. what should I do next?Check the Hard drive. I think its the hard drive. What do you base that on mr_skipper24? A computer should be able to turn on without a working hdd. I suggest powering the system without the UPS connected. Quote from: hugoj on March 12, 2008, 09:58:01 AM I received a small shock one day while trying to turn off my computer when I hit the power button. sounds like a grounding problem, assuming you simply did not get a static shock. check to make SURE the computer is grounded properly. if you do not know how to check i will go more in depth.thanks for the responses. Homer, can you go in depth how to check if grounded. One more thing, the new power supply does have a ground wire, the previous did not. I have it connected to the motherboard. thanksWhat brand/wattage is the UPS unit ? ? Some of them need to be re-set after a spike or outage...Quote from: hugoj on March 12, 2008, 01:36:53 PM thanks for the responses. Homer, can you go in depth how to check if grounded. One more thing, the new power supply does have a ground wire, the previous did not. I have it connected to the motherboard. thanks firstly, what country do you live in?Just as a point of information. I have had over time a number of computers (desktops) that from a shut down mode when the power cord has been removed and later replugged back in (provided if there was a rear toggle on/off switch that was in the on position) the computer would start and go through all phases to boot and operate. So i am suggesting that simply because the unit started up when a removed power cord was re introduced may not be a fault factor. The aspect that it only runs for 5 seconds and then shuts down i suspect is more relevant to a problem.truenorthI also tried connecting to another ups I have and still the same problem. Homer I live in New Jersey.Just a follow up to my last post, my other ups is connected to another circuit. And, I also tried just connecting to an outlet on another circuit and still the same problem.so you live in the US, that means your plugs are 120v, ok. in order to test to see if your plugs are grounded, you will need a voltmeter. firstly, set your voltmeter to AC, if your voltmeter has a voltage dial, set the dial as close to 120v as you can without going under 120v. insert one lead of the voltmeter into the hot slot. note, the hot slot will be smaller in size then the neutral slot as you can see in the picture i provided. next, insert the other lead into the ground slot. if your plug is grounded, you should see ~120v on your meter. if it is not grounded you will not see any voltage. repeat this on the plugs on your UPS to make sure it is grounded as well. [recovering space - attachment deleted by admin]Ok did what you said and everything READS 120. After checking, I connected my other computer to the ups and it works fine. There's a chance it may have been static and you touched the case by the power switch... At any rate if the other machine works then it's not the UPS that's faulty. In the non-working machine BORROW a known working PSU of the same wattage or greater and swap it in there to see if the PSU is the CULPRIT...if so it needs replaced. As always when working inside the case remove all power sources and TAKE anti-static precautions...

Answer»

I received a small shock one day while trying to turn off my computer when I hit the power button. I quickly disconnected the power cord and checked my ups. The ups was fine and when I went to turn the computer on again, I connected the power plug and the computer went on without me touching the power button for about 5 seconds and then turned off. I disconnected the power cord and checked inside the computer to check for any problems but it looked OK so I tried connecting the power cord again and again the computer did the same thing, it went on for about 5 seconds without me touching the power button. I then replaced the power supply and the same thing happened.

what should I do next?Check the Hard drive. I think its the hard drive. What do you base that on mr_skipper24?
A computer should be able to turn on without a working hdd.

I suggest powering the system without the UPS connected.
Quote from: hugoj on March 12, 2008, 09:58:01 AM

I received a small shock one day while trying to turn off my computer when I hit the power button.

sounds like a grounding problem, assuming you simply did not get a static shock. check to make SURE the computer is grounded properly. if you do not know how to check i will go more in depth.thanks for the responses.

Homer, can you go in depth how to check if grounded. One more thing, the new power supply does have a ground wire, the previous did not. I have it connected to the motherboard.

thanksWhat brand/wattage is the UPS unit ? ?
Some of them need to be re-set after a spike or outage...Quote from: hugoj on March 12, 2008, 01:36:53 PM

thanks for the responses.

Homer, can you go in depth how to check if grounded. One more thing, the new power supply does have a ground wire, the previous did not. I have it connected to the motherboard.

thanks

firstly, what country do you live in?Just as a point of information. I have had over time a number of computers (desktops) that from a shut down mode when the power cord has been removed and later replugged back in (provided if there was a rear toggle on/off switch that was in the on position) the computer would start and go through all phases to boot and operate. So i am suggesting that simply because the unit started up when a removed power cord was re introduced may not be a fault factor. The aspect that it only runs for 5 seconds and then shuts down i suspect is more relevant to a problem.truenorthI also tried connecting to another ups I have and still the same problem.

Homer I live in New Jersey.Just a follow up to my last post, my other ups is connected to another circuit. And, I also tried just connecting to an outlet on another circuit and still the same problem.so you live in the US, that means your plugs are 120v, ok. in order to test to see if your plugs are grounded, you will need a voltmeter.

firstly, set your voltmeter to AC, if your voltmeter has a voltage dial, set the dial as close to 120v as you can without going under 120v.

insert one lead of the voltmeter into the hot slot. note, the hot slot will be smaller in size then the neutral slot as you can see in the picture i provided.

next, insert the other lead into the ground slot. if your plug is grounded, you should see ~120v on your meter. if it is not grounded you will not see any voltage.

repeat this on the plugs on your UPS to make sure it is grounded as well.

[recovering space - attachment deleted by admin]Ok did what you said and everything READS 120.

After checking, I connected my other computer to the ups and it works fine. There's a chance it may have been static and you touched the case by the power switch...
At any rate if the other machine works then it's not the UPS that's faulty.
In the non-working machine BORROW a known working PSU of the same wattage or greater and swap it in there to see if the PSU is the CULPRIT...if so it needs replaced.

As always when working inside the case remove all power sources and TAKE anti-static precautions...

Solve : POWER PROBLEM?

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