Summary: Sometimes need arises to check whether your PC gets the right power supply. This is possible with the help of a multimeter.
Do you experience problems like sudden computer restarts or frequent crashes?
When these things happen, most of us believe that our computer is affected by a virus or this might be the result of hardware failure.
But, many of us forget to do one thing. Yes, we do not check the Power Supply Unit of the computer.
A faulty power supply unit can be the trigger behind these crashes and restarts. The reason is that when the power supply unit is faulty, it will not supply the required voltage to the system, thereby leading to freezes or crashes.
What does the power supply do?
The unit that provides energy to the computer is responsible for transforming the alternative current from the wall conduit into a straight power flow that can be used by the components of the computer. This is where a multimeter will help. This meter can be used for testing the power supply of the computer. Testing computer power supply with a multimeter will help with identifying and isolating any possible problems, and this unit will also help with identifying poor power supply. It is recommended to use the probes to get into contact with the terminals and the wires. It is better not to use fingers as there are chances of shocks. Otherwise, a binder clip or a stand can also be used for this purpose.
Here is a step-by-step guide on testing computer power supply with multimeter:
1. The first thing you will have to do is to test the surge protector and the outlet, where the current supply is attached. Now, shut down the computer and remove it from the surge guarding unit. Then, disconnect the guarding unit from the wall unit.
2. Now, you will have to fix your digital multimeter so as to measure the AC voltage. Fix it to 200 V range and insert a probe into the one side of the outlet and the other on the right side. The color of the probe need not be considered as it is AC current. Now, you should be able to see the reading in the range of 110 and 120 volts.
3. The next thing you will have to do is to connect the surge safeguarding unit into the vent such that surge protector can be tested. At this instance too the deciphering should be in the range of 110 and 120.
4. Again, you should adjust your multimeter to test resistance, and your multimeter will produce a tone if there is stability along with a wire. Now, detach the cord that is attached to the energy supply on the rear side of the computer. Use one of the DMM Probes to get in contact with one of the plug terminals. Again, attach the other probe into the female end of the wire. In case you find that not even a single home produces a sound on your multimedia, it means that the cord should be restored. If you find that there is stability for each of the three wires in the supply cable, this means that there is a problem with the energy supply.
So, follow these steps for test computer power supply with multimeter to secure your computer.