Lenovo IdeaPad 3-15IIL05 Heatsink Replacement

Written By: Spencer Day
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Lenovo IdeaPad 3-15IIL05 Heatsink Replacement

Difficulty

Moderate

Steps

13

Time Required

25 - 30 minutes

Introduction

Use this guide to replace the heatsink in your Lenovo IdeaPad 3-15IIL05 laptop.

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    • Allow your laptop's battery to drain below 25% before starting this repair—a charged battery may catch fire if damaged.

    • Unplug all cables and fully shut down your laptop.

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    • Use a Phillips screwdriver to remove the ten screws securing the back cover:

    • Six 7.6 mm-long screws

    • Four 4.7 mm-long screws

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    • Plastic clips secure the back cover to the frame. You'll hear and feel the clips release.

    • Insert the flat side of an opening pick between the top left corner of the back cover and frame.

    • Angle the pick down to about 45 degrees.

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    • Keep the opening pick angled down at about 45 degrees while sliding it along the front and side edges to help release the clips.

    • Slide the pick to the bottom left corner of the laptop to release the left clips.

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    • Slide the opening pick to the bottom right corner to release the bottom clips.

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    • Slide the opening pick to the top right corner to release the right clips.

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    • Insert the flat end of an opening pick between the back cover and frame, to the left of the right hinge.

    • Pry the back cover up with the pick to release the top right clips.

    • Leave the pick inserted next to the right hinge.

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    • Angle the pick up to about 45 degrees.

    • Slide the opening pick to the top left corner to release the remaining clips.

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    • Remove the back cover.

    • During reassembly, lay the back cover on the frame and press firmly around the perimeter to engage all the clips.

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    • Use the flat end of a spudger to gently push the battery connector out of its socket on the motherboard.

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    • Use a Phillips screwdriver to loosen the four captive screws securing the heatsink.

    • During reassembly, tighten the heatsink screws in an "X" pattern. For example: top left, bottom right, top right, bottom left.

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    • Remove the heatsink.

    • You may feel slight resistance when removing the heatsink, as thermal paste bonds it to the CPU.

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    • Before installing a new heatsink, follow this guide to clean the CPU and reapply thermal paste.

    • If you're just reapplying thermal paste and not replacing the heatsink, clean the bottom of the heatsink as well.

Conclusion

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

Check your repair by running hardware tests with Lenovo Diagnostics.

Take your e-waste to an R2 or e-Stewards certified recycler.

Repair didn’t go as planned? Try some basic troubleshooting, or ask our Answers community for help.

Author

Spencer Day

Member since: 14/09/22

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