Li,

One of my old Gilsons (8 years old) died a few months ago and we sent it back for repair. I then learned that they have recently changed the internal board to separate the controller board from the power supply. So it could be cheaper for you to repair than what Toti had to pay.

Good luck.
JF 


-----Message d'origine-----
De : Stable Isotope Geochemistry [mailto:[log in to unmask]] De la part de Toti Larson
Envoyé : 29 mai 2007 09:59
À : [log in to unmask]
Objet : Re: [ISOGEOCHEM] Gilson autosampler problem

Li,

Our Gilson had problems identical to yours and it was downhill from there. 
The problem was that the power supply wore out (after 4 years of continual 
use). Eventually the little green light under arm started to dim, flicker, 
then glow no more. We sent it back to Gilson in  Wisconsin and they 
replaced the power supply, motherboard, drive belts, ect. For around $1500 
it was back in the lab within a week and is now problem free.

Toti

At 01:44 PM 5/24/2007, you wrote:
>Hi,
>
>We have had Multiprep for a few years and are experiencing some problem 
>with Gilson autosampler. Here's what we see. In the middle of the autorun, 
>every time the arm reaches row 3, 4 or 5 ( our sampler has 5 row and 12 
>column.)  Gilson returns to zero position right after the needle pulls out 
>of the vial and will not move to the next position without manually 
>initializing the Gilson.
>
>It is difficult for us to run autorun  with the problem like this. It 
>looks to me that there is problem on that section of the belt ( or track 
>the sampler arm is travel on.) but don't know how to check it. I wonder if 
>any body had seen this before and how they got this problem solved.
>
>Thanks,
>
>li
>
>
>
>
>
>
>Li Huang
>
>Laboratory for Stable Isotope Science
>University of Western Ontario
>London, Ontario
>Canada
>Phone: 1-519-661-3881