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Lenovo IdeaPad 3-15IIL05 Heatsink Replacement

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  1. Lenovo IdeaPad 3-15IIL05 Heatsink Replacement, Prepare your laptop for disassembly: crwdns2935265:01crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Lenovo IdeaPad 3-15IIL05 Heatsink Replacement, Prepare your laptop for disassembly: crwdns2935265:01crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • 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.

  2. Lenovo IdeaPad 3-15IIL05 Heatsink Replacement, Unfasten the back cover: crwdns2935265:02crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Lenovo IdeaPad 3-15IIL05 Heatsink Replacement, Unfasten the back cover: crwdns2935265:02crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • 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

  3. Lenovo IdeaPad 3-15IIL05 Heatsink Replacement, Insert an opening pick: crwdns2935265:03crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Lenovo IdeaPad 3-15IIL05 Heatsink Replacement, Insert an opening pick: crwdns2935265:03crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Lenovo IdeaPad 3-15IIL05 Heatsink Replacement, Insert an opening pick: crwdns2935265:03crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • 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.

  4. Lenovo IdeaPad 3-15IIL05 Heatsink Replacement, Release the left clips: crwdns2935265:04crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Lenovo IdeaPad 3-15IIL05 Heatsink Replacement, Release the left clips: crwdns2935265:04crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Lenovo IdeaPad 3-15IIL05 Heatsink Replacement, Release the left clips: crwdns2935265:04crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • 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.

  5. Lenovo IdeaPad 3-15IIL05 Heatsink Replacement, Release the bottom clips: crwdns2935265:05crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Lenovo IdeaPad 3-15IIL05 Heatsink Replacement, Release the bottom clips: crwdns2935265:05crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Lenovo IdeaPad 3-15IIL05 Heatsink Replacement, Release the bottom clips: crwdns2935265:05crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • Slide the opening pick to the bottom right corner to release the bottom clips.

  6. Lenovo IdeaPad 3-15IIL05 Heatsink Replacement, Release the right clips: crwdns2935265:06crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Lenovo IdeaPad 3-15IIL05 Heatsink Replacement, Release the right clips: crwdns2935265:06crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Lenovo IdeaPad 3-15IIL05 Heatsink Replacement, Release the right clips: crwdns2935265:06crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • Slide the opening pick to the top right corner to release the right clips.

  7. Lenovo IdeaPad 3-15IIL05 Heatsink Replacement, Insert an opening pick: crwdns2935265:07crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Lenovo IdeaPad 3-15IIL05 Heatsink Replacement, Insert an opening pick: crwdns2935265:07crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • 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.

  8. Lenovo IdeaPad 3-15IIL05 Heatsink Replacement, Release the top clips: crwdns2935265:08crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Lenovo IdeaPad 3-15IIL05 Heatsink Replacement, Release the top clips: crwdns2935265:08crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Lenovo IdeaPad 3-15IIL05 Heatsink Replacement, Release the top clips: crwdns2935265:08crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • Angle the pick up to about 45 degrees.

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

  9. Lenovo IdeaPad 3-15IIL05 Heatsink Replacement, Remove the back cover: crwdns2935265:09crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Lenovo IdeaPad 3-15IIL05 Heatsink Replacement, Remove the back cover: crwdns2935265:09crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Lenovo IdeaPad 3-15IIL05 Heatsink Replacement, Remove the back cover: crwdns2935265:09crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • Remove the back cover.

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

  10. Lenovo IdeaPad 3-15IIL05 Heatsink Replacement, Disconnect the battery: crwdns2935265:010crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Lenovo IdeaPad 3-15IIL05 Heatsink Replacement, Disconnect the battery: crwdns2935265:010crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Lenovo IdeaPad 3-15IIL05 Heatsink Replacement, Disconnect the battery: crwdns2935265:010crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • Use the flat end of a spudger to gently push the battery connector out of its socket on the motherboard.

  11. Lenovo IdeaPad 3-15IIL05 Heatsink Replacement, Unfasten the heatsink: crwdns2935265:011crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Lenovo IdeaPad 3-15IIL05 Heatsink Replacement, Unfasten the heatsink: crwdns2935265:011crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • 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.

  12. Lenovo IdeaPad 3-15IIL05 Heatsink Replacement, Remove the heatsink: crwdns2935265:012crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Lenovo IdeaPad 3-15IIL05 Heatsink Replacement, Remove the heatsink: crwdns2935265:012crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • Remove the heatsink.

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

  13. Lenovo IdeaPad 3-15IIL05 Heatsink Replacement, Reassembly information: crwdns2935265:013crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Lenovo IdeaPad 3-15IIL05 Heatsink Replacement, Reassembly information: crwdns2935265:013crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Lenovo IdeaPad 3-15IIL05 Heatsink Replacement, Reassembly information: crwdns2935265:013crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • Before installing a new heatsink, follow this guide to clean the CPU and heatsink and reapply thermal paste.

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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.

Spencer Day

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