Samsung Series 9 NP900X4B-A02 I/O PCB Replacement

Written By: Brady Hildreth
  • Comments: 1
Samsung Series 9 NP900X4B-A02 I/O PCB Replacement

Difficulty

Moderate

Steps

14

Time Required

15 minutes

Introduction

Following this guide will ensure a safe and easy way to replace the Input/Output Printed Circuit Board (I/O PCB) in your Samsung Series 9 (NP900X4B-A02) laptop. No other skills are required to to replace this board, which means anyone can accomplish this task.

The I/O PCB is the board that controls most of the interaction between a person and their computer. As with other circuit boards, a problem with your I/O PCB can be difficult to diagnose. Before replacing your I/O PCB, be sure that the board is the cause of the issue.

Before beginning this guide, ensure that your laptop is powered off and disconnected from its power source.

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    • Ensure computer is unplugged and powered down before continuing.

    • Remove the ten screws along the base using a Phillips #000.

    • Use a Plastic Opening Tool to pry open the base .

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    • The battery is now unobstructed from your view.

    • Before removing the battery, use the plastic opening tool to detach the ribbon wire cable that connects the battery to the motherboard.

    This step is completely unnecessary! There is no need to disconnect the battery for replacing the speakers for NP900X4B-A02.

    BTW, disconnecting the battery is quite tricky. As you can see in the photo, when trying to pull out the connector, it bumps into the connector next to it (on the left). The cables are stiff and you have to exert considerable force and risk hitting the cables with the tool you are using while disconnecting the battery. If you DO have to disconnect the battery for any reason, first unplug the connector to the left, under the battery's ribbon wire cable.

    Mauri Greenzweig -

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    • Use the Phillips #000 screwdriver to remove six screws that are holding the battery in place.

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    • Lift and pull out the battery.

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    • Unplug the left speaker's cable from the motherboard.

    • Lift up and remove the left speaker.

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    • Unplug the right speaker's cable from the motherboard.

    • Lift up and remove the right speaker.

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    • Next locate the two Phillips #0 2.5mm screws on both the top right and bottom left corner of the fan.

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    • After locating the screws, using the Phillips #0 screwdriver, remove the screws from the fan.

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    • Use the plastic opening tool to remove the cable connector from its housing which is just to the right of the fan.

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    • Once the cable has been removed from its housing you are free to remove the fan from the laptop.

    • You can either clean the fan with a computer duster or other cleaner, or replace it with a new one.

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    • Remove the five 2.5 mm Phillips #00 screws securing the I/O PCB.

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    • Lift and pull the SSD from the board.

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    • Disconnect the black press fit connector by gently lifting up.

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    • The I/O PCB is adhered to the frame.

    • Use an opening tool or spudger to carefully pry up the right edge of the I/O PCB.

    • Pull the board to the right and remove it.

    • You may need to wiggle the board to loosen the adhesive holding it in place.

Conclusion

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

Author

Brady Hildreth

Member since: 04/11/19

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