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Dell Chromebook 3100 2-in-1 Motherboard Replacement

Introduction

Follow this guide to remove and replace the motherboard in the Dell Chromebook 3100 2-in-1 laptop.

For your safety, discharge your battery below 25% before disassembling it. This reduces the risk of a dangerous thermal event if the battery is accidentally damaged during the repair.

What you need

  1. Dell Chromebook 3100 2-in-1 Motherboard Replacement, Back Cover: step 1, image 1 of 2 Dell Chromebook 3100 2-in-1 Motherboard Replacement, Back Cover: step 1, image 2 of 2

    • First of all, you have to shut down your Chromebook completely, unplug the power cable and remove any accessories like a mouse or USB drive.

    • Turn the Chromebook upside down so the bottom panel is facing up.

    • Use your Phillips #1 screwdriver to take out all 5mm screws from the bottom case, keep the screws safe, they’re easy to lose!

    Edit

  2. Dell Chromebook 3100 2-in-1 Motherboard Replacement: step 2, image 1 of 2 Dell Chromebook 3100 2-in-1 Motherboard Replacement: step 2, image 2 of 2

    • Use the opening tool to pry the back cover off of the device.

    • Gently insert your plastic prying tool between the bottom cover and the keyboard deck.

    • Work your way around the edges until the case starts to pop open.

    • Lift off the bottom cover carefully.

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  3. Dell Chromebook 3100 2-in-1 Motherboard Replacement, Battery: step 3, image 1 of 2 Dell Chromebook 3100 2-in-1 Motherboard Replacement, Battery: step 3, image 2 of 2

    • Disconnect the battery cable from the connector on the system board.

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  4. Dell Chromebook 3100 2-in-1 Motherboard Replacement: step 4, image 1 of 3 Dell Chromebook 3100 2-in-1 Motherboard Replacement: step 4, image 2 of 3 Dell Chromebook 3100 2-in-1 Motherboard Replacement: step 4, image 3 of 3

    • Using a Phillips #1 screwdriver, remove the three 4 mm screws that secure the battery.

    • Remove the adhesive tape that secures the battery in place.

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  5. Dell Chromebook 3100 2-in-1 Motherboard Replacement: step 5, image 1 of 2 Dell Chromebook 3100 2-in-1 Motherboard Replacement: step 5, image 2 of 2

    • Carefully remove the battery from the device.

    Edit

  6. Dell Chromebook 3100 2-in-1 Motherboard Replacement, Speaker: step 6, image 1 of 2 Dell Chromebook 3100 2-in-1 Motherboard Replacement, Speaker: step 6, image 2 of 2

    • Remove adhesive tape that secures the speaker cable.

    • Disconnect the speaker cable from the connector on the system board.

    Edit

  8. Dell Chromebook 3100 2-in-1 Motherboard Replacement: step 7, image 1 of 2 Dell Chromebook 3100 2-in-1 Motherboard Replacement: step 7, image 2 of 2

    • Remove the speaker cable from the retention clips.

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  9. Dell Chromebook 3100 2-in-1 Motherboard Replacement: step 8, image 1 of 2 Dell Chromebook 3100 2-in-1 Motherboard Replacement: step 8, image 2 of 2

    • Lift and remove the speakers from the device.

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  10. Dell Chromebook 3100 2-in-1 Motherboard Replacement, Motherboard: step 9, image 1 of 3 Dell Chromebook 3100 2-in-1 Motherboard Replacement, Motherboard: step 9, image 2 of 3 Dell Chromebook 3100 2-in-1 Motherboard Replacement, Motherboard: step 9, image 3 of 3

    • Disconnect the keyboard cable.

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  11. Dell Chromebook 3100 2-in-1 Motherboard Replacement: step 10, image 1 of 1

    • Disconnect the two input-output board cables from the motherboard.

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  12. Dell Chromebook 3100 2-in-1 Motherboard Replacement: step 11, image 1 of 2 Dell Chromebook 3100 2-in-1 Motherboard Replacement: step 11, image 2 of 2

    • Disconnect the touchpad cable.

    • Disconnect the USB Type-C power cable.

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  13. Dell Chromebook 3100 2-in-1 Motherboard Replacement: step 12, image 1 of 3 Dell Chromebook 3100 2-in-1 Motherboard Replacement: step 12, image 2 of 3 Dell Chromebook 3100 2-in-1 Motherboard Replacement: step 12, image 3 of 3

    • Remove the single 3 mm screw that secures the WLAN bracket to the system board using a Phillips #1 screwdriver.

    • Lift the WLAN bracket from the system board.

    • After lifting the bracket, carefully unplug the two coaxial cables.

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  14. Dell Chromebook 3100 2-in-1 Motherboard Replacement: step 13, image 1 of 1

    • Remove the single 4 mm screw that secures the eDP bracket to the motherboard using a Phillips #1 screwdriver.

    • Remove the eDP bracket.

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  15. Dell Chromebook 3100 2-in-1 Motherboard Replacement: step 14, image 1 of 2 Dell Chromebook 3100 2-in-1 Motherboard Replacement: step 14, image 2 of 2

    • Disconnect the display cable from the motherboard by using a plastic opening pick.

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  16. Dell Chromebook 3100 2-in-1 Motherboard Replacement: step 15, image 1 of 3 Dell Chromebook 3100 2-in-1 Motherboard Replacement: step 15, image 2 of 3 Dell Chromebook 3100 2-in-1 Motherboard Replacement: step 15, image 3 of 3

    • Remove the five 4 mm screws that secure the motherboard using a Phillips #1 screwdriver.

    Edit

  17. Dell Chromebook 3100 2-in-1 Motherboard Replacement: step 16, image 1 of 2 Dell Chromebook 3100 2-in-1 Motherboard Replacement: step 16, image 2 of 2

    • Lift and remove the motherboard from the computer.

    Edit
Conclusion

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

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Muhammad Ali

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1 Guide Comment

Any idea how to use the USB repair shim? Dell's guide didn't help

Josie - Reply

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