Hello jonasbieri, according to internet forums you should need a xenon bulb with the 3DS base. If one of your bulbs is defective, I would remove it so that you have the exact designation of the base type, light output and light colour. I would recommend that you replace both bulbs, as experience has shown that the other one will also fail in 1/2 a year and the luminous intensity will not differ between the two. Important: When replacing the light, make sure that it is switched off and that you do not switch it on accidentally using the Cominghome function, otherwise there is a danger to life - switch-on voltage of several 1,000 V - otherwise it is not rocket science. Good luck -;)
