Solve : checking psu?

1.	Solve : checking psu?
Answer» i wanna check too see if my psu is the problum and i have one of those multimeter things to test it how would i do this??http://www.driverheaven.net/guides/testingPSU/i cant run the prime95 software becuase my computer cant turn on at all should i still do it?Quote from: computeruler on July 23, 2008, 12:15:15 PM i cant run the prime95 software becuase my computer cant turn on at all should i still do it? Yes, I would. Set the PROBES first, then start the computer. Go in the order suggested in the article and re-power after each probe placement. First you may want to verify that you are plugged directly into a known, good wall outlet - no extension cords, power strips or UPS.it wont turn on though nothing happenes i cant start it should i just plug in the psu or what?Quote from: computeruler on July 23, 2008, 12:25:05 PM it wont turn on though nothing happenes i cant start it should i just plug in the psu or what? I'm not sure that I understand your question. First make sure that you have the computer plugged into a "good" outlet - see above post. BE VERY CAREFUL WORKING INSIDE THE COMPUTER WITH THE COMPUTER CONNECTED TO THE ELECTRIC SUPPLY - YOU COULD DAMAGE THE COMPUTER OR YOURSELF. I understand that the computer won't start and that you want to test the psu. To do the test, place the multimeter probes the way it is shown in the link, then power on the computer and read the voltage, if any. If you get zero voltages, the problem is either the psu or the computer power switch. To test the power switch, follow the leads from the power switch (case switch) to the motherboard connector. Note carefully how the lead is connected (you'll want to replace the lead) and remove it. With an appropriately sized screwdriver, and with the computer plugged into the electric supply, MOMENTARILY short across the motherboard pins that the power switch was connected to - see if the system starts.i put the black one in a black wire the red one in the oragne yellow and red ones (not all at once) then i pressed the on button i got no voltage and the computer still didnt do anythingQuote from: computeruler on July 23, 2008, 12:54:52 PM i put the black one in a black wire the red one in the oragne yellow and red ones (not all at once) then i pressed the on button i got no voltage and the computer still didnt do anything Did you test the power switch? Assuming that you had your multimeter set to the right scale, that the psu is connected to a known, good outlet, that the switch on the psu (if present) is 'on', that the case power switch is good ->bad psu. I would replace with another unit of equal or greater wattage to confirm. Good luck.aready tested the switch a little bit ago didnt turn onQuote from: drmsucks on July 23, 2008, 01:13:17 PM Assuming that you had your multimeter set to the right scale, that the psu is connected to a known, good outlet, that the switch on the psu (if present) is 'on', that the case power switch is good ->bad psu. I would replace with another unit of equal or greater wattage to confirm. Good luck. well im just GOING to do a complete PC upgrade anyways NEW mobo video card possible case cpu psu i think the psu is still under warrenty too so i can replace it for a new oneQuote from: computeruler on July 23, 2008, 01:31:25 PM well im just going to do a complete pc upgrade anyways new mobo video card possible case cpu psu i think the psu is still under warrenty too so i can replace it for a new one Thanks for giving me an opportunity to hone my diagnostic skills. your welcome

Answer»

i wanna check too see if my psu is the problum and i have one of those multimeter things to test it how would i do this??http://www.driverheaven.net/guides/testingPSU/i cant run the prime95 software becuase my computer cant turn on at all should i still do it?Quote from: computeruler on July 23, 2008, 12:15:15 PM

i cant run the prime95 software becuase my computer cant turn on at all should i still do it?

Yes, I would. Set the PROBES first, then start the computer. Go in the order suggested in the article and re-power after each probe placement.

First you may want to verify that you are plugged directly into a known, good wall outlet - no extension cords, power strips or UPS.it wont turn on though nothing happenes i cant start it should i just plug in the psu or what?Quote from: computeruler on July 23, 2008, 12:25:05 PM

it wont turn on though nothing happenes i cant start it should i just plug in the psu or what?

I'm not sure that I understand your question.

First make sure that you have the computer plugged into a "good" outlet - see above post.

BE VERY CAREFUL WORKING INSIDE THE COMPUTER WITH THE COMPUTER CONNECTED TO THE ELECTRIC SUPPLY - YOU COULD DAMAGE THE COMPUTER OR YOURSELF.

I understand that the computer won't start and that you want to test the psu. To do the test, place the multimeter probes the way it is shown in the link, then power on the computer and read the voltage, if any. If you get zero voltages, the problem is either the psu or the computer power switch.

To test the power switch, follow the leads from the power switch (case switch) to the motherboard connector. Note carefully how the lead is connected (you'll want to replace the lead) and remove it. With an appropriately sized screwdriver, and with the computer plugged into the electric supply, MOMENTARILY short across the motherboard pins that the power switch was connected to - see if the system starts.i put the black one in a black wire the red one in the oragne yellow and red ones (not all at once) then i pressed the on button i got no voltage and the computer still didnt do anythingQuote from: computeruler on July 23, 2008, 12:54:52 PM

i put the black one in a black wire the red one in the oragne yellow and red ones (not all at once) then i pressed the on button i got no voltage and the computer still didnt do anything

Did you test the power switch?

Assuming that you had your multimeter set to the right scale, that the psu is connected to a known, good outlet, that the switch on the psu (if present) is 'on', that the case power switch is good ->bad psu. I would replace with another unit of equal or greater wattage to confirm.

Good luck.aready tested the switch a little bit ago didnt turn onQuote from: drmsucks on July 23, 2008, 01:13:17 PM

Assuming that you had your multimeter set to the right scale, that the psu is connected to a known, good outlet, that the switch on the psu (if present) is 'on', that the case power switch is good ->bad psu. I would replace with another unit of equal or greater wattage to confirm.

Good luck.

well im just GOING to do a complete PC upgrade anyways NEW mobo video card possible case cpu psu i think the psu is still under warrenty too so i can replace it for a new oneQuote from: computeruler on July 23, 2008, 01:31:25 PM

well im just going to do a complete pc upgrade anyways new mobo video card possible case cpu psu i think the psu is still under warrenty too so i can replace it for a new one

Thanks for giving me an opportunity to hone my diagnostic skills. your welcome

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