你担心你的电脑故障源于一个失败的（或彻底炸毁）电源设备。如何测试单元以确定它是硬件问题的根源？

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问题

超级用户阅读器Sam Hoice有一些PSU问题：

My computer powered off the other day on its own, and now when I push the power button, nothing happens. My assumption would naturally be that the power supply is done (possibly well done) but is there any good way to test this before I buy a new one?

Sam如何在不损坏当前计算机或其他硬件的情况下进行测试？

答案

超级用户参与者授权写入：

Unplug the power supply from any of the components inside the computer (or just remove it from the computer completely).

USE CAUTION HERE (Though you’d only be shocked with a max of 24 volts)

1. Plug the power supply into the wall.
2. Find the big 24-ish pin connector that connects to the motherboard.
3. Connect the GREEN wire with the adjacent BLACK wire.
4. The power supply’s fan should start up. If it doesn’t then it’s dead.
5. If the fan starts up, then it could be the motherboard that’s dead. You can use a multimeter to check if there is power output from the power supply.

Adrien为可能不习惯将电线**电源设备MOBO连接器的读者提供了一种解决方案：

Most well-stocked geek-stores sell a “power-supply tester” that has all the appropriate connectors to plug each part of your PSU into, with spiffy LEDs indicating status of the various rails, connectors for IDE/SATA/floppy power cables, etc. They run ~$20 US.

稍微仔细一点的购物，你甚至可以找到一个评价很高的PSU测试仪为微薄的6美元。

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