How to check a laptop power supply with a multimeter

Computer technology has long become an integral part of modern people's lives. It is used in various enterprises, offices and to perform various tasks at home. Fast information processing, the ability to interact with other users and the emergence of network access are the main advantages of using computers.

Manufacturers are trying to improve performance, add new features and improve the quality of technical specifications. But despite the use of advanced ideas and developments, over time, any equipment can break down and not perform its functions fully. This can significantly slow down or stop your workflow, so it's important to diagnose and fix problems quickly.

In our article we will talk about a way to check the status of the power supply using various devices. This method will allow you to check the condition of the equipment without disassembling the body and internal structure.

What are multimeters?

Such a check can only be carried out using special equipment. This device is called a multimeter. If this is your first time encountering this element, it will be useful to learn about its design, principle and operating features.

Multimeters are special devices that sense electrical current and read information about its strength, voltage and resistance.There are various models of devices that differ in the method of application and the accuracy of the data obtained. It is also called a tester, since the test consists of testing the transmission of an electrical signal through wires and the main elements of the electrical circuit involved in ensuring the operation of all equipment.

Important! Typically, this method is used if there is no external damage after diagnosis. If you encounter a problem with the operation of your laptop, this method will help identify the source of the problem.

How to check a laptop battery?

If problems occur in the power supply, you can use various methods for assessing defects. Of course, it is worth carrying out an external inspection to identify mechanical damage. If this does not give results, you should use a tester. To use it, you must complete the following action plan:

1. Ensure that the power supply is connected to the network. Inspect the integrity of the outlet and the quality of the wires.
2. After this, you need to ensure that the tester is connected. Depending on the model used, you can run the device along the block (wireless testing method); when using wires, you need to connect special terminals to the equipment.
3. The connection begins with the red wire, which is inserted into the plug, after which the black wire is brought with the tip up next to the power supply.
4. After this, evaluate the readings on the main screen of the device. If there is a sharp deviation and a pendulum-like swing of the needle, one can judge that the equipment is malfunctioning; in this case, it is worth replacing the elements.
5. If the readings on the device are not recorded, this may indicate an incorrect connection of the multimeter, or damage to the wires connecting the power supply to the laptop. In this case, you will have to change the wiring, which is much cheaper compared to changing all the equipment.

Important! If you manage to detect a malfunction, you can repair it yourself or seek help from professionals. To receive free assistance under warranty, you cannot repair the device yourself.

The frequency of inspection largely depends on the intensity of use and operating mode of the equipment. If you notice various malfunctions in the operation of some equipment components, you should pay attention to the power supply. To check, you can use another type of battery; if the laptop functions normally with it, it is worth changing the element.

It is also recommended to carry out diagnostics as planned at least once a month; this will help to identify problems at an early stage and eliminate them in order to extend the service life.