Introduction
This is a guide for a Sony DualShock 4 PlayStation 4 Controller and can be used on any other companies’ controllers (Scuf or Custom Controllers).
This procedure will help fix an R3 or L3 button on a controller that is not working properly or is having issues when trying to move.
Take care during this whole operation as these are very small and sensitive parts, but be very careful in Steps 1 and 2 to not damage any wires that connect the controller and the battery, as well as while reassembling.
What you need
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Remove the four screws from the back of your controller using a Phillips #0 screwdriver.
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Separate the front and the back of the controller.
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Remove the single screw from the black plate covering the motherboard using a Phillips #0 screwdriver.
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Remove the black plate from the controller.
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Disconnect the ribbon cable that connects the back of the controller to the motherboard.
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Remove the motherboard from the back of the controller.
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Use a spudger to pry open the toggle stick sensor.
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Use a cotton swab with a little bit of rubbing alcohol to remove the grease and build-up from the sensor.
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To reassemble the controller, place the back cover onto the motherboard.
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Slip the red wire through the controller cover and plug it in.
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Plug the battery back in and put it in its place.
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Plug the white wire back into the motherboard.
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Connect the front cover and the back cover of the controller and screw the four screws back in.
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