I am not really sure if it is from the drive. But anyway, i put the drive back into ps3 without the upper part and there for the drive goes after a eject back to start position.
So i put the rest togehter and now it works fine but it does not recognize any disk.Drive is reading and spinning and i could see the blue laser as the upper part was not on drive. Also i tried to restore the file system but no success.
And i tryed to re seat the laser but it doesnt help.