How To Test a Computer Fan With an Ohmmeter To Find Out If It Is Faulty

The components inside modern computers these days produce lots of heat because they are working really hard to deliver high performance at speed. The heat that is produced by the components must be dissipated quickly as possible, this is to reduce the components getting damaged, components such as a CPU or GPU that heat up quickly. Cooling computer fans are usually placed onto the top of components that generate a tone of heat because the blades on the computer fan produce cool air that blows directly onto the components, which reduces the operating temperature. If you are about to install a computer fan to your computer, you want to ensure that it is working correctly and is not faulty, if it is, the components are in a risk of getting damaged from overheating. So before installing them into your computer, test the computer fan with an ohmmeter.

Instructions:

1)Remove the computer fan from a computer, if it is connected to your computer. First undo the screws that are holding it in place and then disconnect the fan connecter from the motherboard or molex connector, from, the power supply unit (PSU).

2)Once the computer fan is removed from your computer, power on the ohmmeter and connect the red colour positive probe to the red wire on the fan. Then connect the black colour negative probe on the black wire on the computer fan.

3)Look on the screen display on the ohmmeter, it should display that the stator has a resistance of 0 ohms, which is good and shows that the computer fan is working fine. If the stator resistance reading is more than 10 ohms, the computer fan is damaged or is faulty, so to ensure that your computer components get reliable cooling, you will need to replace it with a working computer fan.