ASUS VivoBook S400C CPU Fan Replacement
Jerry Wheeler and one other contributor
Last updated on Jun 23, 2022
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Community-Contributed Guide
An awesome member of our community made this guide. It was not created by iFixit staff.
Introduction
Go to step 1 ↓The CPU fan blows cool air across the fins of the heatsink to remove the heat generated by the processor from the computer.
Since the fan runs at all times when the computer is turned on, it is expected that it may eventually fail. The fan's lifetime can be extended by an occasional cleaning.
What you need
Fix Kit
This kit contains all the parts and tools needed to complete this guide.
Parts
Tools
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Spudger4.9
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Flip the device over and remove the ten 5.7 mm screws with a Phillips #0 screwdriver.
Ask FixBot
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Use a spudger or your fingers to go around and lift the edges and release the back panel.
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Using a spudger, lift up the plug connecting the battery to the motherboard.
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Remove the black shield covering the display connector and the heat sink.
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Unplug the fan.
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Grasp the plug with a fingernail on either side and pull it straight out from the connector.
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Remove the two 5 mm screws securing the fan.
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Remove the four 3 mm screws securing the heat sink.
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Lift the fan and heatsink straight up to remove it.
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Flip the assembly over and peel off the tape wrapped around the edge of the fan.
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Starting at one end, carefully peel off the tape securing the heatsink to the lip of the fan.
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Clean the old thermal paste off the heatsink until it is spotless.
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Carefully remove the old thermal paste from the CPU. It is not vital to get the old paste off the parts of the chip under the Kapton tape, but be obsessive about cleaning the silicon chip itself and the area immediately next to it.
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To reassemble your device, follow these instructions in reverse order.
