Thanks! It i sfrom a CECHJ04 PS3.. I tried some more things now, and I am 95% sure that it is the top of the drive, since that is used to raise the laser? and that is the thing that isn't working..
Little update: The plastic thingy that I marked in red on the picture hadn't had a spring, so I replaced it from another broken drive I had (other model). That didn't work.
So, now it will eat and eject cds, but when a cd is inserted it keeps spinning for a few seconds and then will do nothing since the laser won't rise up..
Another update: Got one of the two arms (the left one, with the motor), working. now the right one needs to come up..
Anyone can help me with the right arm?
Last edit: I got it working!!