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I accidentally dropped my 3ds off my bed and since then my R button has been having problems, it only works when it feels like it and applying force doesnt help, i tried blowing it to it, cleaning it with a tooth brush but then its fixed for about 4 input clicks and then continued being dead inside and unresponsive…what do i do

Hi! Can you manage to open your 3DS ? Maybe the plastic button is broken from the inside and is not able to click the button in as it should. It also could be the button it self which is not aligned to the plastic button. Please follow this guide if you want to check for yourself: Nintendo 3DS Right Shoulder Button Replacement