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APEX TM785CH Circuit Board Replacement

Introduction

You will be able to break the tablet down to the circuit board and disconnect the components connected to the circuit board.

What you need

  1. APEX TM785CH Circuit Board Replacement, Back Casing: step 1, image 1 of 2 APEX TM785CH Circuit Board Replacement, Back Casing: step 1, image 2 of 2

    • Start by bending the tablet back at the top white-colored portion to expose an opening between the back cover and the tablet body.

    • Wedge a plastic opening tool into the opening and push it down to force the back cover off.

    • Move along the top edge of the tablet and repeat the step above.

    • Pull the back cover away from the tablet body to completely remove it.

    Edit

  2. APEX TM785CH Circuit Board Replacement, Battery: step 2, image 1 of 2 APEX TM785CH Circuit Board Replacement, Battery: step 2, image 2 of 2

    • With the back cover removed, you can now see the battery.

    • You will need a soldering/desoldering kit to desolder the 3 battery leads to the circuit board.

    Edit

  3. APEX TM785CH Circuit Board Replacement, Microphone: step 3, image 1 of 3 APEX TM785CH Circuit Board Replacement, Microphone: step 3, image 2 of 3 APEX TM785CH Circuit Board Replacement, Microphone: step 3, image 3 of 3

    • The microphone is located in the bottom center of the tablet.

    • Remove the black tape holding the wires down.

    • Remove the black tape holding the microphone in place.

    • The microphone is now exposed and can be gently pulled out of the socket.

    Edit

  4. APEX TM785CH Circuit Board Replacement: step 4, image 1 of 1

    • You will need a soldering/desoldering kit to desolder the 2 leads where the microphone connects to the circuit board.

    Edit

  6. APEX TM785CH Circuit Board Replacement, Speakers: step 5, image 1 of 3 APEX TM785CH Circuit Board Replacement, Speakers: step 5, image 2 of 3 APEX TM785CH Circuit Board Replacement, Speakers: step 5, image 3 of 3

    • The speakers are located towards the bottom left and bottom right corners of the tablet.

    • If not already done, remove the black tape holding the wires down.

    • Wedge a spudger underneath the speaker in its socket, near where the wires are connected. You can then pry out the speakers.

    Edit

  7. APEX TM785CH Circuit Board Replacement: step 6, image 1 of 2 APEX TM785CH Circuit Board Replacement: step 6, image 2 of 2

    • You will need a soldering/desoldering kit to desolder the 4 leads where the speakers connect to the circuit board.

    Edit

  8. APEX TM785CH Circuit Board Replacement, Front Camera: step 7, image 1 of 2 APEX TM785CH Circuit Board Replacement, Front Camera: step 7, image 2 of 2

    • To get to the front camera, you will first need to remove the top panel.

    • Unscrew two 2.25 mm Phillips screws with a #00 screwdriver from the top plastic panel to remove it.

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  9. APEX TM785CH Circuit Board Replacement: step 8, image 1 of 1

    • Once unscrewed, use a spudger to pop the panel off by wedging it underneath the panel.

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  10. APEX TM785CH Circuit Board Replacement: step 9, image 1 of 3 APEX TM785CH Circuit Board Replacement: step 9, image 2 of 3 APEX TM785CH Circuit Board Replacement: step 9, image 3 of 3

    • First, use plastic coated tweezers to pull up the black release tab.

    • Pull on the black connector with tweezers as close as possible to the white connector base, making sure not to pull on the connector base.

    • It is important to be careful not to damage the black connector tape or the white base.

    • Next, use the tweezers to peel off the tape holding down the connector to the front camera.

    • The front camera can now be removed from its socket.

    Edit

  11. APEX TM785CH Circuit Board Replacement, Circuit Board: step 10, image 1 of 3 APEX TM785CH Circuit Board Replacement, Circuit Board: step 10, image 2 of 3 APEX TM785CH Circuit Board Replacement, Circuit Board: step 10, image 3 of 3

    • After removing the top panel, battery, speakers, microphone, and front camera from the tablet, you will also need to use the tweezers to remove the connectors indicated in the same method as the previous step.

    • It is important to be careful not to damage the black connector tape or the white base.

    Edit

  12. APEX TM785CH Circuit Board Replacement: step 11, image 1 of 2 APEX TM785CH Circuit Board Replacement: step 11, image 2 of 2

    • Using a Phillips screwdriver, remove three 2.25 mm screws from the circuit board.

    • The circuit board can now be removed from the tablet.

    Edit
Conclusion

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

One other person completed this guide.

Author

with 2 other contributors

Brian Graschel

Member since: 03/23/15

823 Reputation

6 Guides authored

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Team

Baylor, Team 4-1, Williams Spring 2015 Member of Baylor, Team 4-1, Williams Spring 2015

BU-WILLIAMS-S15S4G1

3 Members

12 Guides authored

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