Introduction
Step-by-step on how to either replace or readjust the L2/R2's rubber components on a dualshock PS4 controller (Model CUH-ZCT1).
What you need
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Click the restart button on the back in a tiny hole to ensure controller is off.
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Unscrew the Outer Shell apart from each other. There are two sides.
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Use the screwdriver to unscrew the four screws on the back.
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Proceed to pry open the shell by squeezing the top end of the shell's handles then pull towards the back buttons.
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Detach strip on bottom shell from the upper shell. There should be a blue-tab attachment where you are able to pry the strip from its connector for an easy disassemble.
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Disconnect the connector that is connecting the battery to the motherboard. Remove the battery.
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Next pull away the L2/R2 buttons from their positions. L2/R2 should be removed by carefully pulling vertically.
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Examine the controllers rubber guards to see if it needs to be replaced or simply needs to be readjusted. If it is damaged, replace the rubber guard with a new one for the correct model, then, proceed to the next step. If not, proceed to the next step.
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Carefully slide the rubber guard with the area that sticks out more going down into the slot (The crater part of the rubber guard should be in place for the R2/L2 slots; see picture for directions). Once in place, ensure it is snugged and secure.
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The buttons should reset to normal position as it is being depressed.
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Reconnect the battery.
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Connect the strip back into the connector then close the shell starting from the triggers to the handles.
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Screw all screws back into place.
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