KaneBloodstorm,
I realise this is a very late reply and youve probably gotten around this problem somehow by now, but I felt like adding my experience.
When I first arrived at the Astrolabe, I handed over the 3 pieces of machinery that I had found and the screen faded out and then in again. The Astrolabe now *appeared* to be working, things spinning etc. etc.
However, when I spoke to the guy running it, he was still complaining that it would never be fixed blah blah...
What Im basically saying is, are you 100% sure that you found all the pieces? I was frustrated for days trying to get Larrel to talk to me after I was sure the Astrolabe was fixed.
Check that you got all four bits! If you want to know where they can be found:
1) The first piece is on the right side of the bottom level of the Severed Hand. You need to use the lift on the third floor to get to it.
http://www.mikesrpgcenter.com/icewind/maps/ar5001.html
2) A second piece is on the 3rd floor of Solonor Tower.
http://www.mikesrpgcenter.com/icewind/maps/ar5200.html
3) The next piece is on the 2nd floor of Corellon Tower.
http://www.mikesrpgcenter.com/icewind/maps/ar5300.html
4) Defeat all the elf warrior shades in Sheverash tower at Kaylessa's behest. Return to her and defeat her as she requests to get the final piece of machinery.
http://www.mikesrpgcenter.com/icewind/maps/ar5400.html
Thanks to
http://www.mikesrpgcenter.com for the excellent resouces and links.
Hopefully that was helpfull!
Cheers,
kroma.