Self-check power supply
Today, let's talk about how the computer power supply is tested. To do this, follow the steps below.
If your unit is equipped with a switch, then youyou must disable it with this button. Then unplug the power cord (usually black) from the device. Next, open the side cover of the system (as a rule, it is located on the right (if viewed from the rear side)).
When you unscrew the lid, you will have a fullaccess to all components of the system unit, including, and to the power unit. Take a picture or schematically draw a diagram of connecting all the wires that go from the unit to the rest of the computer. This will help you after completing the procedures to connect everything as necessary. After the drawing, it is necessary to disconnect absolutely all the wires coming from the power supply. When you do this, once again make sure that all the items are disabled (this is a very serious and important point!). Assemble all the wiring in one bundle, and then use a rubber band or clamp to fix it, and then take it all out of the system unit. Once again, make sure that the power supply is not connected at the moment to the mains.
Checking the power supply of the PC is as follows. Closing, no matter what way, black with a green wire from the connector, through which it is connected to the motherboard. This can be done with tweezers or a paper clip. In this case, the green wire is only one, but there will be a few black ones. It does not matter which of them will be chosen. Pay attention to the fact that the clip does not fall out of the connector, and also make sure that it does not touch any objects or surfaces.
Plug the power cord into the required connector, andturn the switch to the power-up mode. Checking the power supply unit is considered successful, if after all of your actions the fan started spinning. In this case, everything is in order. If this is not the case, it is strongly recommended that you contact the service center to repair this item.
After the power supply check is completed,it is necessary to bring everything back to its original position. To do this, turn off the power switch again, and then unplug the power cord. Remove the accessory with which you closed the contacts, thereby breaking the chain. In the motherboard include certain connectors, then connect the power cable to the unit from one side, and to the outlet on the other. After that, press the power button.
When the fan blades start to rotate, andAlso you will hear the CPU noise, see the work of the video card and hard drive - press and hold the power button until your USB drive goes off. If the computer's motherboard is equipped with an audio speaker, then wait for it to work. This will report the successful completion of the self-test and verify that all devices are operating in normal mode.
In the case when the computer startsrealized, see if everything is correctly connected. If this is the case, check the operability of the rest of the computer. Now you know how to test the power supply!