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Introduction

If your 4Sight 9’s screen has been cracked, is not responding to touch, or has a dead backlight, use this guide to replace it.

  1. Place the tablet on its side so that the two screws are facing upward. Remove two 1 mm screws from the left side of the tablet using a Phillips #00 screwdriver.
    • Place the tablet on its side so that the two screws are facing upward.

    • Remove two 1 mm screws from the left side of the tablet using a Phillips #00 screwdriver.

  2. Pry the case away from the device slowly by sliding a plastic opening tool along the device.
    • Pry the case away from the device slowly by sliding a plastic opening tool along the device.

    • Once loosened, use your hands to separate the case from the device.

  3. Hold the positive and negative wires as close as possible to the speaker. Use an opening tool and fingers to simultaneously lift the speaker from the cover.
    • Hold the positive and negative wires as close as possible to the speaker.

    • Use an opening tool and fingers to simultaneously lift the speaker from the cover.

  4. Use soldering gun to remove the positive and negative wires connecting the battery to the circuit board.
    • Use soldering gun to remove the positive and negative wires connecting the battery to the circuit board.

    • For a complete guide on how to solder, click here.

  5. Insert plastic prying tool under upper-hand corner of battery and slide back and forth. Once loosened, insert plastic prying tool under lower-hand corner and repeat sliding action.
    • Insert plastic prying tool under upper-hand corner of battery and slide back and forth.

    • Once loosened, insert plastic prying tool under lower-hand corner and repeat sliding action.

    • Repeat previous actions until battery comes loose from device.

  6. Grip the ribbon located at the far end of the circuit board with a plastic spudger tool. Put pressure on the connector until the clasp comes undone.
    • Grip the ribbon located at the far end of the circuit board with a plastic spudger tool.

    • Put pressure on the connector until the clasp comes undone.

    • Gently pull up on electrical ribbon until it disconnects from circuit board.

  7. Remove the second electrical ribbon from the motherboard using the same technique used to remove first ribbon. Remove the second electrical ribbon from the motherboard using the same technique used to remove first ribbon.
    • Remove the second electrical ribbon from the motherboard using the same technique used to remove first ribbon.

  8. Using #00 Phillips Screwdriver, remove the four 1mm screws holding the circuit board to the device.
    • Using #00 Phillips Screwdriver, remove the four 1mm screws holding the circuit board to the device.

  9. With fingers, grip the green Wi-Fi connector. Gently pull up on connector to remove tape holding the connector in place.
    • With fingers, grip the green Wi-Fi connector.

    • Gently pull up on connector to remove tape holding the connector in place.

  10. With the motherboard facing you, look to the bottom left corner, pull on the camera to completely free the motherboard. With the motherboard facing you, look to the bottom left corner, pull on the camera to completely free the motherboard.
    • With the motherboard facing you, look to the bottom left corner, pull on the camera to completely free the motherboard.

  11. Using your fingers, gently lift the motherboard and battery.
    • Using your fingers, gently lift the motherboard and battery.

  12. Insert plastic prying tool under screen and exert pressure, pulling upward. Repeat this step around each corner of the screen until it pops off. Ensure screen is free from all black tabs holding it in place.
    • Insert plastic prying tool under screen and exert pressure, pulling upward.

    • Repeat this step around each corner of the screen until it pops off.

    • Ensure screen is free from all black tabs holding it in place.

  13. Place heating pad on glass frame in order to loosen adhesive for 3 to 5 minutes
    • Place heating pad on glass frame in order to loosen adhesive for 3 to 5 minutes

    • Remove plastic film from glass frame

Conclusion

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

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Hali Ramirez

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