Carrera Mario Copter Controller Circuit Board Replacement

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Flip the controller over so the underside would face up
Remove four of 7.1mm screws with a JIS #1 screwdriver
Remove two 4.0mm screws located on the handle with the JIS #1screwdriver.
Remove two 7.1 mm screws on the small area that stick out from the surface with the JIS #1 screwdriver
Use an extension with the JIS #1 screwdriver in order to get to the screws with yellow marks because they locate deep inside the holes.

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