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Toshiba Satellite L455-S5975 Logic Board Replacement

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Before starting any removal or installation, remember to turn off the device and to remove it from the power source.

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  1. Toshiba Satellite L455-S5975 Logic Board Replacement, Keyboard: crwdns2935265:01crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Toshiba Satellite L455-S5975 Logic Board Replacement, Keyboard: crwdns2935265:01crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Before repairing your laptop, power down the system, disconnect the charger if necessary and remove the battery.

    • Use the flat edge of the plastic opening tool to pry open the narrow plastic strip above the keyboard.

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  2. Toshiba Satellite L455-S5975 Logic Board Replacement: crwdns2935265:02crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Remove the three 3mm screws with a Phillips#00 Screwdriver.

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  3. Toshiba Satellite L455-S5975 Logic Board Replacement: crwdns2935265:03crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Lift the keyboard away from the top side of the laptop.

    • Do not pull the keyboard away too hard. It is still connected by the fragile ribbon cable (shown in the red square).

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  4. Toshiba Satellite L455-S5975 Logic Board Replacement: crwdns2935265:04crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Toshiba Satellite L455-S5975 Logic Board Replacement: crwdns2935265:04crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Disconnect the keyboard cable that is still attached to the keyboard.

    • Unlatch the fastener.

    • Using your hands, pull the keyboard connector out, not up.

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  5. Toshiba Satellite L455-S5975 Logic Board Replacement, Fan: crwdns2935265:05crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Toshiba Satellite L455-S5975 Logic Board Replacement, Fan: crwdns2935265:05crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Flip the laptop over to access the battery.

    • Remove the battery by sliding fingers away from each other and lifting up the tab at the same time.

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    • Remove the twelve 10mm screws with a Phillips #00 screwdriver.

    • Remove the cover over the hard drive (upper right in photo) and remove the four 10mm screws at the four corners.

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    • Remove the three 4mm screws with a Phillips #00 screwdriver.

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    • Flip the laptop over so it's in the right-side-up position.

    • Lift the grey plastic casing up and unhook any wires attached to the casing.

    • Remove the five 10mm screws, each with a label 'F10' next to them.

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  10. Toshiba Satellite L455-S5975 Logic Board Replacement: crwdns2935265:09crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Toshiba Satellite L455-S5975 Logic Board Replacement: crwdns2935265:09crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Disconnect the flat thin wire connecting the track pad to the motherboard by pulling it straight out.

    • Disconnect the thin red wire on the right side of the motherboard.

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    • Remove the two 6mm screws with a Phillips #00 screwdriver.

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  12. Toshiba Satellite L455-S5975 Logic Board Replacement: crwdns2935265:011crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Toshiba Satellite L455-S5975 Logic Board Replacement: crwdns2935265:011crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • Disconnect the red and yellow wires connecting the fan to the motherboard by pulling the wires straight out.

    • Remove the fan.

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  13. Toshiba Satellite L455-S5975 Logic Board Replacement, Logic Board: crwdns2935265:012crwdnd2935265:01crwdnd2935265:01crwdne2935265:0

    • Remove the following with a Phillips #00 Screwdriver:

    • Six 7mm Phillips Head screws

    • One 5 mm Phillips Head screw

    • Remove the LCD screen tab

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  14. Toshiba Satellite L455-S5975 Logic Board Replacement: crwdns2935265:013crwdnd2935265:01crwdnd2935265:02crwdne2935265:0 Toshiba Satellite L455-S5975 Logic Board Replacement: crwdns2935265:013crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

    • A red wire connects the motherboard to the computer, so release the wire by pulling it straight out.

    • After all the screws are removed, lift the motherboard up and away from the earphone jacks that are located at the front of the laptop.

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

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Mike Kennedy

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Cal Poly, Team 2-21, Maness Spring 2013 crwdns2935289:0Cal Poly, Team 2-21, Maness Spring 2013crwdne2935289:0

CPSU-MANESS-S13S2G21

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