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Lenovo ThinkPad T490s - Thermal Paste Replacement

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This guide will show you how to open the laptop to replace the Thermal Paste. This guide will also help you upgrade the RAM or the SSD inside.

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  1. Lenovo ThinkPad T490s - Thermal Paste Replacement, Opening the back panel: crwdns2935265:01crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Lenovo ThinkPad T490s - Thermal Paste Replacement, Opening the back panel: crwdns2935265:01crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Lenovo ThinkPad T490s - Thermal Paste Replacement, Opening the back panel: crwdns2935265:01crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • 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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  3. Lenovo ThinkPad T490s - Thermal Paste Replacement, Changing the thermal paste: crwdns2935265:02crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Lenovo ThinkPad T490s - Thermal Paste Replacement, Changing the thermal paste: crwdns2935265:02crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Lenovo ThinkPad T490s - Thermal Paste Replacement, Changing the thermal paste: crwdns2935265:02crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • 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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  4. Lenovo ThinkPad T490s - Thermal Paste Replacement, Other upgrades: crwdns2935265:03crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

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

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Simeon Brankov

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

Bryan C - crwdns2934203:0crwdne2934203:0

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