Introduction
The back buttons on your PDP Rematch Advanced should be replaced if they are getting stuck and not being pressed down completely. If you need to replace the back button, take out the motherboard with this guide. The back buttons are attached to the back shell. The back buttons can be removed by taking out the components located behind the motherboard.
Tools
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Orient the controller so the back side is facing you.
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Use a Phillips #000 screwdriver to remove the seven 9 mm screws that secure the back shell.
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Twist the thumbstick to remove it from the motherboard. Repeat this step if both thumbsticks need to be replaced.
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Lift the back button, and then pull it out through the back shell. Do this for both back buttons.
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To reassemble your device, follow these instructions in reverse order.