Closed-loop color system

Hi,

We have some problems with ours GMI ColorQuick reading heads. Seems that the light lamps doesn't have the same intensity.
Also, for short periods we have lacks in receiving data from the heads.
I think the lamps life time is at the end and we need to replace them.

Now GMI is AVT-INC and the first thought was to ask them to replace the lamps. I presume that the price is kind of prohibitive.

Do you work with other closed-loop sistems? I think that the lamps are about the same and a second offer is welcome.
Thanks.