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Toshiba Satellite L55W-C5256 CPU Heatsink Replacement

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This guide will instruct you on how to safely remove and replace the CPU heat sink of your Toshiba Satellite L55W-C5256. You may need to do this if:

  • Your device is continually overheating or running hot
  • Your device powers down or blue screens due to CPU overheat

Before beginning this replacement guide, it is recommended that you use an anti-static work mat and that you ground yourself using an anti-static wrist strap. This helps to protect your device from damage caused by static discharge. If you do not have these materials, you can find an anti-static wrist strap here, and an anti-static work mat here. To learn how to properly use an anti-static wrist strap and an anti-static work mat (recommended), see the guide found here.

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  1. Toshiba Satellite L55W-C5256 CPU Heatsink Replacement, Battery: crwdns2935265:01crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Before beginning this repair, power off your device and unplug all cables and accessory devices.

    • Flip the laptop over so that the model numbers are facing the ceiling.

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    • Use a Phillips #00 screwdriver to remove the 10 screws that secure the back cover to the device.

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    • Gently use an iFixit opening tool to separate the back cover from the laptop. Go around all edges until plastic clips are completely free.

    • Ensure all plastic clips have been freed. Attempting to forcefully remove the back cover could result in damage to your device.

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  5. Toshiba Satellite L55W-C5256 CPU Heatsink Replacement: crwdns2935265:04crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Before touching any component inside your device, ensure you are properly grounded with an anti-static band.

    • Disconnect the battery connector cable from the motherboard.

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    • Using a Phillip's #00 screwdriver, remove the four 7.0 mm screws that secure the battery to the motherboard.

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    • Lift the battery from the motherboard.

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  8. Toshiba Satellite L55W-C5256 CPU Heatsink Replacement, CPU Heatsink: crwdns2935265:07crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Using a Phillips #00 screw driver, remove the four 7.0 mm screws that secure the heat sink to the CPU.

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    • Using a Phillips #00 screw driver, remove the two 7.0 mm screws that secure the heat sink fan to the motherboard.

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  10. Toshiba Satellite L55W-C5256 CPU Heatsink Replacement: crwdns2935265:09crwdnd2935265:01crwdnd2935265:03crwdne2935265:0 Toshiba Satellite L55W-C5256 CPU Heatsink Replacement: crwdns2935265:09crwdnd2935265:02crwdnd2935265:03crwdne2935265:0 Toshiba Satellite L55W-C5256 CPU Heatsink Replacement: crwdns2935265:09crwdnd2935265:03crwdnd2935265:03crwdne2935265:0

    • Before you touch any component inside your device, ensure you are properly grounded with an anti-static band.

    • Gently lift the heat sink from the motherboard, making sure not to apply much tension to the connector cable.

    • Using your thumb and forefinger, gently unplug the connector cable from the motherboard.

    • Lift the heat sink from the motherboard.

    • If you need to replace the heat sink, check out this thermal paste guide that will walk you through the steps necessary to replace the thermal compound.

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

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