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Lenovo IdeaPad 3-15IML05 Motherboard Replacement

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  1. Lenovo IdeaPad 3-15IML05 Motherboard Replacement, Lower Case: crwdns2935265:01crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Lenovo IdeaPad 3-15IML05 Motherboard Replacement, Lower Case: crwdns2935265:01crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • Before beginning, discharge the battery below 25%, power the device off, and disconnect all peripherals.

    • Use a Phillips #1 screwdriver to remove the following screws:

    • Six 7 mm screws

    • Four 4 mm screws

  2. Lenovo IdeaPad 3-15IML05 Motherboard Replacement: crwdns2935265:02crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Lenovo IdeaPad 3-15IML05 Motherboard Replacement: crwdns2935265:02crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • Insert an opening pick into the seam between the lower case and chassis.

    • Slide the pick around the entire perimeter until all of the plastic retaining clips release.

    • Remove the lower case.

    • Forcing the back cover open could break the plastic retaining clips.

    • During reassembly, lay the cover flat and press around the edges to secure it to the plastic clips.

  3. Lenovo IdeaPad 3-15IML05 Motherboard Replacement, Battery: crwdns2935265:03crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Lenovo IdeaPad 3-15IML05 Motherboard Replacement, Battery: crwdns2935265:03crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • Use a Phillips #00 screwdriver to remove the three 5 mm screws securing the battery.

    • To remove the battery, slide it to the right and lift it away from the hard drive cover.

    • If needed, you can lift the hard drive cover by removing the two 5 mm screws on the left.

  4. Lenovo IdeaPad 3-15IML05 Motherboard Replacement, CMOS Battery: crwdns2935265:04crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Lenovo IdeaPad 3-15IML05 Motherboard Replacement, CMOS Battery: crwdns2935265:04crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Lenovo IdeaPad 3-15IML05 Motherboard Replacement, CMOS Battery: crwdns2935265:04crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • Using a spudger or tweezers, push the CMOS battery JST connector out of its socket.

    • Pulling directly on the cables could damage the connector.

  5. Lenovo IdeaPad 3-15IML05 Motherboard Replacement: crwdns2935265:05crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Lenovo IdeaPad 3-15IML05 Motherboard Replacement: crwdns2935265:05crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • Grasp and remove the CMOS battery, which is secured with adhesive.

    • Prying tools, such as a spudger, can be used to remove the CMOS battery.

  6. Lenovo IdeaPad 3-15IML05 Motherboard Replacement, Motherboard: crwdns2935265:06crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Lenovo IdeaPad 3-15IML05 Motherboard Replacement, Motherboard: crwdns2935265:06crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • Use your fingernails to flip up the two locking flaps on the ZIF connectors near the battery.

    • You may use tweezers to flip the locking flaps up.

  7. Lenovo IdeaPad 3-15IML05 Motherboard Replacement: crwdns2935265:07crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Lenovo IdeaPad 3-15IML05 Motherboard Replacement: crwdns2935265:07crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • For the larger ZIF cable, grab the sides and gently pull it out of its socket.

    • For the smaller ZIF cable, use the blue pull tab provided and gently pull it out of its socket.

    • When reconnecting the cables, ensure the locking flap is up, insert the cable into the socket, and flip the locking flap down. The cables should slide in with little to no force.

  8. Lenovo IdeaPad 3-15IML05 Motherboard Replacement: crwdns2935265:08crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Lenovo IdeaPad 3-15IML05 Motherboard Replacement: crwdns2935265:08crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • Using angled tweezers, slide them under the metal neck of the antenna cables, and lift straight up.

    • Lifting at an angle could damage the socket underneath the board.

    • When reconnecting the antenna cables, hold the cable with tweezers and gently press with your finger or a spudger. They should snap into place, however this might take a few tries.

    • Don't force the connector into place or you might permanently damage it.

  9. Lenovo IdeaPad 3-15IML05 Motherboard Replacement: crwdns2935265:09crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Lenovo IdeaPad 3-15IML05 Motherboard Replacement: crwdns2935265:09crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • Using tweezers, gently pull the JST fan cable out of its socket.

    • Use a Phillips #00 screwdriver to remove the following screws:

    • Two 3.5 mm screws

    • One 5 mm screw

    • Lift the fan and guide the antenna cables out of the clips on its edge.

    • Slightly shift the fan to the left, away from the motherboard.

  10. Lenovo IdeaPad 3-15IML05 Motherboard Replacement: crwdns2935265:010crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Lenovo IdeaPad 3-15IML05 Motherboard Replacement: crwdns2935265:010crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Lenovo IdeaPad 3-15IML05 Motherboard Replacement: crwdns2935265:010crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • Using a Phillips #0 screwdriver remove each of the two 2.5 mm screws that secure the SSD and Wi-Fi card.

    • The SSD and Wi-Fi card will pop up at angle once the screw is removed.

    • Pull the SSD and Wi-Fi card out of their sockets.

    • During assembly, insert both at a downward angle into their socket.

  11. Lenovo IdeaPad 3-15IML05 Motherboard Replacement: crwdns2935265:011crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Lenovo IdeaPad 3-15IML05 Motherboard Replacement: crwdns2935265:011crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • Using your fingernails, flip up the locking flap on the ZIF cable connector, located near the fan and motherboard

    • You may use tweezers to flip the locking flap up.

    • Use the blue pull tab provided and gently slide the cable out of its socket.

    • When reconnecting the cable, ensure the locking flap is up, insert the cable into the socket, and flip the locking flap down. The cable should slide in with little to no force.

  12. Lenovo IdeaPad 3-15IML05 Motherboard Replacement: crwdns2935265:012crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Lenovo IdeaPad 3-15IML05 Motherboard Replacement: crwdns2935265:012crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Lenovo IdeaPad 3-15IML05 Motherboard Replacement: crwdns2935265:012crwdnd2935265:03crwdnd2935265:03crwdne2935265:0
    • Using angled tweezers, flip up the locking flap on the ZIF cable connector.

    • For the ZIF cable, grab the sides and gently pull it out of its socket.

    • Using tweezers, gently pull the JST cable out of its socket.

    • When reconnecting the ZIF cable, ensure the locking flap is up, insert the cable into the socket, and flip the locking flap down. The cable should slide in with little to no force.

  13. Lenovo IdeaPad 3-15IML05 Motherboard Replacement: crwdns2935265:013crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Lenovo IdeaPad 3-15IML05 Motherboard Replacement: crwdns2935265:013crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • Use a Phillips #00 screwdriver to remove the four 2.5 mm screws that secure the heat sink.

    • Lift the heat sink straight up.

    • Based on the thermal paste's condition, some resistance might be present while removing the heat sink.

  14. Lenovo IdeaPad 3-15IML05 Motherboard Replacement: crwdns2935265:014crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Lenovo IdeaPad 3-15IML05 Motherboard Replacement: crwdns2935265:014crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • Push both of the metal arms away from the RAM module.

    • Upon pushing both sides, the RAM will pop up.

    • Pull the RAM out of its socket.

    • During reassembly, insert the RAM at a 45 degree angle and push down until it clips into place.

  15. Lenovo IdeaPad 3-15IML05 Motherboard Replacement: crwdns2935265:015crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Lenovo IdeaPad 3-15IML05 Motherboard Replacement: crwdns2935265:015crwdnd2935265:02crwdnd2935265:02crwdne2935265:0
    • Use a Phillips #00 screwdriver to remove the following screws:

    • Three 2.5mm screws

    • Two 3.5mm screws

    • A Lenovo sticker might be hiding the third 2.5 mm screw.

    • Lift and pull the motherboard away.

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To reassemble your device, follow the above steps in reverse order.
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.

Robert Carbajal Gonzalez

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