Dell Latitude 3390 2-in-1 Heat Sink Replacement

Escrito Por: Keith C
  • Comentários: 0
Dell Latitude 3390 2-in-1 Heat Sink Replacement

Dificuldade

Moderate

Passos

8

Tempo necessário

20 minutes

Introdução

The heatsink is responsible for drawing heat away from the CPU to keep the laptop running at a safe temperature. Over time, dust buildup, dried thermal paste, or a bent heatsink can cause the system to overheat, throttle performance, or shut down unexpectedly. Replacing the heatsink restores proper cooling and prevents long-term damage to internal components.

  1. dEDBvSJCbKU3WfNM
    dEDBvSJCbKU3WfNM
    IEXWoewPSEJJCHPk

    • Power off the device and unplug all cables before beginning.

    • Flip the laptop over so that the bottom side is facing up. Place it on a soft, static free surface to prevent damage.

    • Use a Phillips #0 screwdriver to carefully remove all seven 7 mm-long screws securing the back cover.

  2. soxYkvQtroxUfYJI
    soxYkvQtroxUfYJI
    E4vsMS4Epo2suEF6
    RbTKjLGAxETxnnpM

    • Insert an opening tool into the seam between the back cover and chassis.

    • Pry around the perimeter of the back cover until it fully releases.

    • Lift off the back cover slowly and set it aside.

    • Avoid using metal tools, as they can scratch or damage the casing.

  3. 2K3uwdkyYTaoLpFe

    • Use a Phillips #0 screwdriver to remove the four 4 mm-long screws securing the battery.

  4. kfyrKkmVEoXf1iLo
    kfyrKkmVEoXf1iLo
    XGwMgbVRwmYVvfcZ

    • Disconnect the battery from the motherboard by gently pulling the connector straight out of its socket.

    • Don't pull on the cable.

  5. wTUck4YCBPAVNcyQ

    • Carefully lift out the old battery from its compartment, ensuring that no cables or connectors are pulled or damaged.

  6. LAHySbedvaPnmbsW

    • The heat sink is located on the top center of the laptop and curves to connect to the fan.

  7. ptf14VcAtQqDXMdE
    ptf14VcAtQqDXMdE
    6aFlKpVa5ErDsfw4

    • Remove the four 4 mm-long Phillips #0 screws that secure the heat sink.

  8. L5ZbBxZUKxLACucP

    • Carefully lift the heat sink out.

Conclusão

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.

Autor(a)

Keith C

Membro desde: 12/09/25

615 Reputação

0 comentários