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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.
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Place the tablet on its side so that the two screws are facing upward.
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Remove two 1 mm screws from the left side of the tablet using a Phillips #00 screwdriver.
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Pry the case away from the device slowly by sliding a plastic opening tool along the device.
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Once loosened, use your hands to separate the case from the device.
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Hold the positive and negative wires as close as possible to the speaker.
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Use an opening tool and fingers to simultaneously lift the speaker from the cover.
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Use soldering gun to remove the positive and negative wires connecting the battery to the circuit board.
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Insert plastic prying tool under upper-hand corner of battery and slide back and forth.
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Once loosened, insert plastic prying tool under lower-hand corner and repeat sliding action.
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Grip the ribbon located at the far end of the circuit board with a plastic spudger tool.
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Put pressure on the connector until the clasp comes undone.
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Gently pull up on electrical ribbon until it disconnects from circuit board.
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Remove the second electrical ribbon from the motherboard using the same technique used to remove first ribbon.
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Using #00 Phillips Screwdriver, remove the four 1mm screws holding the circuit board to the device.
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With fingers, grip the green Wi-Fi connector.
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Gently pull up on connector to remove tape holding the connector in place.
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With the motherboard facing you, look to the bottom left corner, pull on the camera to completely free the motherboard.
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Using your fingers, gently lift the motherboard and battery.
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Insert plastic prying tool under screen and exert pressure, pulling upward.
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Repeat this step around each corner of the screen until it pops off.
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Ensure screen is free from all black tabs holding it in place.
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Place heating pad on glass frame in order to loosen adhesive for 3 to 5 minutes
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Remove plastic film from glass frame
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
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Eastern Washington University, Team 1-2, Plummer Spring 2015 crwdns2935289:0Eastern Washington University, Team 1-2, Plummer Spring 2015crwdne2935289:0
EWU-PLUMMER-S15S1G2
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