Question about AOpen Computers & Internet
A great way to test a PSU is to use a PSU Tester. The device allows you to see if all the circuits are getting power and it only requires you to plug it in to power. This allows the ability to test it safe and reliably without accidentally damaging hardware. Below is a link to a tester.
Posted on Feb 03, 2009
Disconnect PSU from MOBO and then short GREEN to ANY BLACK pins....if the PSU fan turns it's OK if not use a voltmeter to check for DC voltage....+12, -12, +3.3, etc....if present, PSU is OK but PSU fan is dead...
Posted on May 20, 2009
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Posted on Jan 02, 2017
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Mar 08, 2011 | Computers & Internet
Verify that the power supply voltage switch is set correctly. If the input voltage for the power supply does not match the correct setting for your country, your computer may not power on at all.
Check for disconnected computer power cable connections. A loose or unplugged power cable is one of the top reasons why a computer doesn't turn on.
Perform a "lamp test" to verify power is being provided from the wall. Your computer isn't going to turn on if it's not getting power so you need to make sure that the power source is working properly.
Test your power supply. At this point in your troubleshooting, it's very likely that thepower supply unit in your computer is no longer working and should be replaced. You should however test it just to be sure. There's no reason to replace a working piece of hardware when testing it is fairly easy.
Replace your power supply if it fails your testing.
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