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Power supply: fan replacing - how to

  • Mar 22, 2024
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The fan in the power supply of your computer, rattles, or he turns his rounds and even harm the power supply or even the whole Hardware. To replace the fan, but it is not recommended only in very few cases advisable and lay urgently. For electrical professionals, and voltage-experts, we have summarized here, nevertheless, the individual installation steps.

Caution: the fan in the power supply replace only for professionals

Advance warning: This manual is not intended for laypersons. Even after the mains plug has been disconnected and the voltage was reduced by using the on/Off switch, can stand the power supply is still under power. A strong electric shock is not so excluded, if you touch it during installation, accidentally type devices. Apart from that, the Fan replacement, the power adapter is only worthwhile in very few cases:
  • To find a suitable fan for the power supply is not easy, some manufacturers use special sizes. In addition, the installation takes 30 minutes. A new power supply, there are from 40€, depending on the number of watts is even cheaper.
  • What to look for when buying a new power supply in mind, read in a further practical tip. By the way: In our comparison of the prices you will find for a number of power supplies the cheapest price - you can have the Hardware according to User popularity order.

Step 1: fan-replacement - power-supply on the PC to expand

Make sure when buying the new fan, the fact that this has the same performance. At best, they will replace the broken fan with the same model.
  1. Turn off your Computer and remove the power cable. Press then repeatedly to remove the switch to the residual voltage. Caution: A part of the residual voltage remains. Do not use on electronic components or the circuit Board.
  2. Now take a Phillips screwdriver and remove the rear right of the two screws to open the PC.
  3. You remove the top, also all the screws that fasten the power supply. In General, you will not find here more than four screws.
Fan exchange - how to

Step 2: fan-replacement - power-supply open

  • You have solved the power supply from the rear wall and the PC is open, you can lift it up gently. Please be careful and note that at the other end of the cable sensitive plug-in Connections are located.
  • In most computers, the power supply current of the cables are just long enough that you can lift up the power supply and on the center of the CPU fan set. However, you have more than two hands on the ground, you should keep the power supply with your hands in the air, instead of drop it. Under certain circumstances, may arise due to the Drop damage to the rest of the Hardware.
  • On the bottom of the power supply, you will find several screws. Also on the sides of the PSU to hide some screws. Loosen the screws, the power supply easy to open.
Power supply from the PC lift

Step 3: fan-replacement - fan power supply replace

  • You remove the fan and you are looking for the end of the cables connected to it. A plug-in connection, which is easy to solve, is located here, you can replace the fan here.
  • In many cases, the connection is soldered, however. Loosen the connection with a soldering iron and then connect the new fan. You have installed the fan, you can build the Computer back together in reverse order.
  • Also, this way is not possible, disconnect the fan using side cutters. The Ends of the cable you can now connect with the new fan. Strip the insulation from the cable with a heat shrink tube, because the power supply is running very hot.
Fan from the power supply switch
Instructions at your own risk. CHIP-Online, and the author assume no liability for damage to Hardware or personal injury.
In the next practical tip we will show you how to make your PC fan to properly clean. The Top power supplies in the price comparison we have for you here assembled.

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