Machinarium evevator room help?

[ginge51]

Hey all.

Nice game
Anyway.
I'm stuck in the evevator room near the end of the game.
I've got the bulb when i grip hold of the robot that comes out once I've shaken it.
I put the bulb in, but now i need another bulb as there is also another missing?
Ho do i find the other one or isn't this other one needed?
And, how do i solve this damn puzzlw?

Thanks

[james]

Please move this to Q&A

[ivi]

You will only get the last missing bulb after you've dismantled the bomb and cleared the big-headed robot's brain from viruses. You can still use the elevator for what you need now with one missing bulb.