If you've ever had your computer lock up on you, spontaneously reboot, and other peripherals stop functioning on your PC, a likely culprit is the power supply. But how do you test if you power supply is faulty? Well you could try another power supply, or even easier you could use CaseBuy's EZ Power Supply Tester. This handy little gadget lets you test your power supply by hooking it up to the tester and in moments the tester will show the results if it's faulty or not.
The tester is a simple affair with connections on both ends, and a LED display on top. The unit is about the size of a playing card and has a brushed aluminum casing. Instructions are printed on the back of the packaging and on the unit it's self and are easy to read and straight forward.
The tester will test the following power supply rails: +3.3V, -12V, PG (Power Good) +12V +5VSB (5 Volt Standby), -5V and +5V.
Testing is as easy as unplugging your power supply from the motherboard and connecting the tester to it. I suggest you remove all connections to peripherals for a more accurate test result. If you see all the LED lights on the right side light up green and the tester makes a beep sound, then your power supply is ok. If any of the LED lights don't come on you have a problem with your power supply.
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