Lenovo Yoga C640-13IML Fan Assembly Replacement

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Use this guide to replace the fan assembly in your Lenovo Yoga C640-13IML. The fan and heatsink plays a crucial role in cooling your laptop by drawing heat away from the CPU. If your device is overheating, shutting down under load, or if the thermal paste has dried out, replacing the heatsink can help restore normal thermal performance.

Caution: The fan and heatsink may become extremely hot during or after use. Allow the laptop to cool completely before starting the repair to avoid burns. Always power off the device and disconnect the battery before handling internal components.
Note: Replacing the heatsink usually involves removing the cooling fan and reapplying thermal paste to ensure proper heat transfer. Make sure to replace the thermal paste before you replace the heat sink.
Reminder: Take note of screw placement and fan cable routing during disassembly. Apply the new thermal paste evenly when installing the new heatsink to ensure effective cooling.

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Lenovo Yoga C640-13IML Fan Assembly Replacement, Battery: crwdns2935265:01crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

Use a Torx T4 screwdriver to remove the six 4.60 mm screws securing the bottom panel.
Keep the screws organized to make reassembly easier.

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Lenovo Yoga C640-13IML Fan Assembly Replacement: crwdns2935265:02crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

Insert a plastic spudger or opening pick into the seam between the bottom panel and the chassis.
Gently slide the tool along the edges to release the internal clips and lift the panel off.
Go slowly to avoid cracking or snapping the plastic clips.

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Lenovo Yoga C640-13IML Fan Assembly Replacement: crwdns2935265:03crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

Remove the five 4.60 mm Phillips #0 screws securing the battery to the chassis.
Keep these screws separate from the bottom panel screws—they’re different sizes.

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Lenovo Yoga C640-13IML Fan Assembly Replacement: crwdns2935265:04crwdnd2935265:01crwdnd2935265:02crwdne2935265:0

Lenovo Yoga C640-13IML Fan Assembly Replacement: crwdns2935265:04crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

Use the flat end of a spudger to lift and unclip the outer edges of the connector. You may need to use your fingers to pull the connector completely out of its socket.
Do not pull on the battery wires—only lift from the plastic base of the connector using a spudger.
To reconnect the cable, carefully position the connector over its socket and press straight down—the connector should snap into place without much force. If you're having trouble, the connector is most likely misaligned. Reposition it and try again.
Lift the battery out of the laptop.

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Lenovo Yoga C640-13IML Fan Assembly Replacement, Fan Assembly: crwdns2935265:05crwdnd2935265:01crwdnd2935265:03crwdne2935265:0

Lenovo Yoga C640-13IML Fan Assembly Replacement, Fan Assembly: crwdns2935265:05crwdnd2935265:02crwdnd2935265:03crwdne2935265:0

Lenovo Yoga C640-13IML Fan Assembly Replacement, Fan Assembly: crwdns2935265:05crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

Use a Phillips #0 screwdriver to remove the screws securing the fan assembly
Lift and remove the housing and heat sink from your device to access the fan underneath.

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Lenovo Yoga C640-13IML Fan Assembly Replacement: crwdns2935265:06crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

Use the point of a spudger to push on alternating sides of the fan assembly connector to "walk" it out of its socket.
It may take a lot of alternating before the connector comes out. Be patient, and don't pull on the cables.
To reconnect the cable, align the connector and use a spudger or clean fingernail to push it fully into the socket.
Don't push on the cables themselves, or you may damage the connector.