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Hi, my Gameboy SP dont turn ON, the battery is ok, but when i open it i found one piece floating in the case, i dont know much about electronic but i wanna know what device´s kind are, for the possibly replacement. Thanks

rojitas_1980 that is not a capacitor! That is a SMD choke coil inductance 100 µH 1000mA max current. you would have to measure teh physical size of it and then check with places like Mouser.com or Digikey.com as well as many others for a replacement.