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Lenovo ThinkPad T490s - Thermal Paste Replacement

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  1. Lenovo ThinkPad T490s - Thermal Paste Replacement, Opening the back panel: étape 1, image 1 de 3 Lenovo ThinkPad T490s - Thermal Paste Replacement, Opening the back panel: étape 1, image 2 de 3 Lenovo ThinkPad T490s - Thermal Paste Replacement, Opening the back panel: étape 1, image 3 de 3
    • Unscrew all screws holding the back panel in place.

    • Use a prying tool to release all the clips and remove the panel.

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  2. Lenovo ThinkPad T490s - Thermal Paste Replacement, Changing the thermal paste: étape 2, image 1 de 3 Lenovo ThinkPad T490s - Thermal Paste Replacement, Changing the thermal paste: étape 2, image 2 de 3 Lenovo ThinkPad T490s - Thermal Paste Replacement, Changing the thermal paste: étape 2, image 3 de 3
    • Disconnecting the battery is highly recommended.

    • Unscrew the 4 screws holding the CPU heatsink and disconnect the fan.

    • Clean the old thermal paste from both the cooler and the CPU.

    • Use isopropyl alcohol and cotton swabs or paper towel, but be careful not to press too hard on the CPU.

    • It's also recommended to use compressed air to remove any dust in the laptop and the fan.

    • Use only enough thermal paste to cover a portion of the pad. Use a spreader if you have one.

    • The thermal paste will apply evenly after you tighten the heatsink.

    • Place the heatsink back into the unit carefully and tighten the screws in an "X" pattern to ensure even pressure. Don't forget to plug in the fan cable.

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  3. Lenovo ThinkPad T490s - Thermal Paste Replacement, Other upgrades: étape 3, image 1 de 1
    • Once you have the back cover opened, it is a good opportunity to upgrade the SSD. To do so, follow the SSD Replacement Guide.

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Conclusion

To reassemble your device, follow these instructions in reverse order.

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Simeon Brankov

Membre depuis le 11/08/20

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78 tutoriels rédigés

2 commentaires de tutoriel

Are you sure thermal paste should be applied to the smaller PCH die?

Bryan C - Réponse Partager

No dont apply thermal paste on PCH like the picture only the cpu , it's designed to operate at a lower temperature than the CPU. Applying thermal paste can thermally connect the PCH to the CPU's cooling system (e.g., heatsink), causing the PCH to absorb excess heat from the much hotter CPU. This can lead to the PCH running at dangerously high temperatures, potentially causing system instability or permanent damage.

hani - Réponse Partager

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