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Posted 11 March 2016 - 12:46 PM
Posted 11 March 2016 - 01:41 PM
Posted 11 March 2016 - 02:26 PM
Posted 11 March 2016 - 06:42 PM
Sounds like a cheap fan inside the power supply has frozen a bearing. Is it spinning?? If it doesn't spin or does very slowly, watch for smoke, that's next.
Posted 11 March 2016 - 06:50 PM
PSU made a lot of noise
The only thing that will make any noise in a PS is the cooling fan. I have had two experiences in the past where the circulation fan bearings started squeeling so I replaced the fans. It's really not complicated; power down, unplug the box, and press the power button to discharge the capacitors on the mainboard. There are usually 4 screws holding the power supply to the case, so just remove those and slide it out. Each manufacturer mount it a bit differently, but you can figure it out. You will have to unplug all wires and connectors, so make a diagram or label them as to where they go when you reinstall. Remove the power supply.
At this point, I will strongly caution you not to touch the circuit board; the capacitors on the PS can hold a large charge for several hours.
The fan is mounted separately and usually has a small plug connection to the circuit board. Just unplug it. The fan itself usually removes easily.
Try Newegg.com for fans, they are a good company and the fans are very cheap.
Here is a link to a Youtube video on this:
If you simply don't have the funds at all, remove the fan and put a couple of drops of light machine oil on the axle of the fan. You may have to remove a label or small rubber cap to access it. But....do not use the computer with the fan not working, you can burn out the PS and possibly damage other components as well as corrupting your operating system.
Edited by ranchhand_, 11 March 2016 - 06:56 PM.
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Posted 11 March 2016 - 07:11 PM
Take extra care when working inside a computer PSU. I have done it but one wrong move and you can become a statistic like this person.
Posted 12 March 2016 - 02:23 AM
Posted 12 March 2016 - 05:45 AM
Posted 12 March 2016 - 11:54 AM
Posted 12 March 2016 - 06:28 PM
Posted 12 March 2016 - 09:16 PM
Posted 12 March 2016 - 11:46 PM
It sounds like the noise you were hearing was a coil whine. It doesn't always indicate a problem. A quality power supply shouldn't really generate a lot of coil whine though. When I was still building my own PCs I'd go for PSUs with solid Japanese components. The Corsairs claim to have this and they come with up to a 7 year warranty. That sounds hard to beat honestly.
You could always buy a cheap PSU tester. They cost less than 5 dollars and that's with free shipping. They are available on Amazon. :-)
PS - Was this system being protected via a UPS? I always use a UPS as it conditions the power being sent to the system. Brownouts can damage equipment, not just surges.
Posted 13 March 2016 - 10:40 AM
Edited by antoniu200, 13 March 2016 - 10:42 AM.
Posted 13 March 2016 - 11:13 AM
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