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This guide shows you how to install the shoulder buttons (L + R) in the bottom shell of your Nintendo Game Boy Advance SP.
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            If the hinge pin fell out when removing the shoulder button, put it back into place. 
 
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            Slide the spring into the shoulder button so the bent arm goes into the cutout on the inside edge. 
 
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            Use your fingers to hold the spring in place and slide the button over the hinge pin and into its recess. 
 
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            Use your finger, a spudger, or a pair of tweezers to rotate the spring arm into its clip. 
 
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            Repeat the process to install the other shoulder button. 
 
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Return to your original repair guide and continue with reassembly.
Return to your original repair guide and continue with reassembly.
