What Steps Should You Follow Test A Power Supply Unit?
Is your system rebooting randomly? The major reason behind the problem could be a problematic power supply unit(PSU). Problems in PSUs can cause the malfunctioning of single components, black screen or system not powering at all. In such a situation, it would be wise on your part to check the PSU since problems within it would prevent your system from functioning efficiently. It might also damage the hardware components of your computer. Here is a guide that can help you test a PSU:-
Make Use of a Special Testing Device
In case you have a device that is specifically meant for special testing, then you will need to attach the main power connector, one by one with other connectors. The green LED will signify whether voltages are OK or not. This is a suitable option if you are planning to perform a quick test.
Utilize a Multimeter
With the help of a multimeter, you can test each pin individually and find out their voltage. To power the PSU without connecting it to your system, you will need to connect the PS_ON pin to one of the GROUND pins. Once you have done that, you will need to install the multimeter correctly. Attach the black cable to the ground jack and the red one with voltage-measuring jack(V). Make sure that the turn switch is set at 20V DC voltage.Once you have done that, connect the tip of the black cable with one of the GROUND pins and tip of the red cable to all other pins to supply power. Following this method, you can check all your connectors. The offsets need to be put at +/- 5% at the maximum. You should use a new PSU in case you have detected pins or in case measured values are out of the valid range. If you need to, you can use tables in PDF file to document the values you have measured. In case you have different connectors, you will need to contact Google for pin configuration.
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