3 different types of laptop cooling fan detail disassembly and clean steps

ByEvelyn Garcia 2019-06-14 13557

Depending on the thickness of the fuselage, costs and other considerations, the design of each type of heat sink component is not the same. Some small cover plates are reserved for easy maintenance in the fuselage bottom and some need to shell the C-shell or even remove the bottom. The same applies to the internal heat dissipation components: Although the heat dissipation component of the notebook consists of two parts, a cooling fan and a heat dissipation fin, the mounting methods of the two components differ, z. The fan can also be disassembled in different ways. Disassembling the notebook fan To understand the disassembly method, we must assume that the fan is a fixed type. In summary, it can be divided into the following three types:

1. The fan is mounted independently on the motherboard

Fan material: pure plastic

Representative models: Hasee Feitian UI45, HP DV4

The fans of this type are all made of plastic (the fan consists of the impeller and the air hood). Two or three mounting holes are provided around the fan. The fan and the main board are connected by screws and the fan air hood is fixed. The air outlet is directly aligned with the heat dissipation fins and a sponge or tape is attached to the joint between the fan and the heat dissipation fin so that the airflow blown by the fan can be fully blown onto the fin to improve heat dissipation efficiency.

Disassembly method: If there is tape at the connection between fan and heat sink fin (some precision models or cost-saving models do not have this design), first remove the tape and disconnect the fan and power using a screwdriver or tweezers. Connect and remove all screws holding the fan. Lift the fan from the end of the heat sink fins and slowly pull it upwards. The fan can be easily removed.

 fans of this type

Haier X3: Remove the three screws around the fan to separate the fan from the heat sink.

 Remove the three screws

Samsung 530U Ultrabook: The fan edge is equipped with 2 fastening screws, which can be removed to separate the fan.

2. The fan wheel is attached to the radiator base

Fan material: alloy casting + plastic

Representative Model: Lenovo Y470

The biggest feature of this heat sink type is its compact design: The ultra-short cooling tube is wrapped tightly around the fan to save space, the heat sink bottom (the metal parts of the heat dissipating copper tube and the motherboard chip) and the fan The air hood is directly cured together and the fan is simply hung with an impeller over the heat sink foot and fastened with a few screws.

Disassembly method: Similar to the disassembly method of the first model type except that the fan mounting screw is located at the bottom of the heat pipe and not on the air hood frame. Remove the screws and disconnect the fan from the power supply. Line, raise the fan wheel. The Lenovo Y470, fan motor and impeller are mounted on the heat sink assembly.

Disassembly method 

3.Fan assembly material: iron piece + plastic

Fan assembly material: iron piece + plastic

Representative Model: Acer 4750G

Based on the requirements of the internal design, the heat sink fins of some models and the cover plate are welded together at the top of the radiator air hood, and the lower half of the fan and the air hood are mounted as a whole under the cover plate The disassembly method is somewhat special.

Disassembly Tip: If you follow the formal disassembly process, you must first remove the heat sink including the heat pipe, then remove the three screws at the top of the air hood and remove the fan with air hood and impeller. Partially. However, if you want to create shortcuts, you must remove the motherboard, then remove the three screws at the top of the air cap, and remove the fan from the back of the motherboard. Only during operation are the heat dissipation component and motherboard connected and care must be taken not to damage the motherboard during operation. For safety reasons, we naturally recommend preparing the heat conducting paste and dismantling it according to the conventional dismantling method. Acer 4750: The upper radiator fan cover and the heatpipe fins are firmly connected to each other.

 Disassembly Tip

To clean the fan

After removing the cooling fan, the fans and coolers can be officially started. Before you start, however, you must prepare some necessary tools such as brushes, rubber bubbles, Phillips screwdrivers and cotton swabs. To make it easier to understand the individual disassembly and maintenance steps, the Haier S60 notebook is presented with the most common fan and heat sink design.

Step 1: Remove the fan. Disconnect the heat sink from the motherboard. First remove the aluminum foil attached to the joint between the fan and heat sink fins, then remove the mounting screws around the fan cowl and remove the fan from the heat sink. At this point we can see a lot of dust accumulating at the junction of the ribs and the fan.

 To clean the fan

Step 2: Remove the fan cover. Remove the three small screws on the top cover of the fan cover and remove the cover of the fan cover. At this point you can see the inside of the fan cover and the fan wheel.

Remove the fan cover 

Step 3: Clean the fan dust. Use a brush to remove the dust from the edge of the impeller, then enter the impeller and remove the dust from both sides of the blade. If you come across dirty and hard to remove dirt, use a cotton swab to add some water to wipe off. We would like to remind you that the fan cannot be flushed directly under the tap because the fan motor has no waterproof function.

 Clean the fan dust.

Step 4: Clean the heat sink fins. Use a brush to remove the dust on the surface of the heat sink fin air outlet and then follow the direction of the heat sink fin air outlet to clean the inside of the fin and clean it with rubber air from the outside of the air outlet. Blow loose dirt into the fuselage until it is completely removed.

 Clean the heat sink fins

Step 5: Mount and glue the aluminum foil. Assemble the fan in reverse order to disassembly. After assembly, remember to attach aluminium foil to the joint between fan and fin (you can also use fabric tape instead). This aluminium foil can seal the air hood. The cold air blown out can be blown everywhere over the blades instead of exiting at the edges.


The effect of the cleaning tool after display and cleaning is finished.

 The effect of the cleaning tool

This completes the cleaning of the notebook fan. Everyone must be flexible and careful when dismantling. If the model is still under warranty, we do not recommend removing all heat emitting components. If you have already purchased thermal paste or the notebook has been in use for more than two years, you can of course replace the new silicone grease.

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