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Introduction

It is rare for LED boards to fail, so be sure to check that the function that is supposed to be lighting the LED is working correctly before suspecting a faulty LED.

Note that the battery has been removed for the purpose of visual clarity in this guide, but it is not necessary in order to replace the LED board. Doing so does make removing the ribbon cable slightly easier.

What you need

Step 1 Remove the Bottom Cover

ASUS VivoBook S400C LED Board Replacement, Remove the Bottom Cover: step 1, image 1 of 1

Flip the device over and remove the ten 5.7 mm screws with a Phillips #0 screwdriver.

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Step 2

Use a spudger or your fingers to go around and lift the edges and release the back panel.

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Step 3 Disconnect the Battery

ASUS VivoBook S400C LED Board Replacement, Disconnect the Battery: step 3, image 1 of 1

Using a spudger, lift up the plug connecting the battery to the motherboard.

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Step 4 LED Board

ASUS VivoBook S400C LED Board Replacement, LED Board: step 4, image 1 of 3

ASUS VivoBook S400C LED Board Replacement, LED Board: step 4, image 2 of 3

ASUS VivoBook S400C LED Board Replacement, LED Board: step 4, image 3 of 3

Disconnect the ribbon cable connecting the LED daughterboard and the motherboard by lifting the white tab on the LED side of the cable.

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Step 5

Pull out the ribbon cable on the LED side by pulling on the blue tab.

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Step 6

ASUS VivoBook S400C LED Board Replacement: step 6, image 3 of 3

The LED board is held in place by a hook on the left end and a latch on the right.
Press the latch with a spudger while lifting with a fingernail.
Pull the LED board to the right to clear the left-hand hook.