On Thu, 11 Feb 2010 19:40:59 -0600, "Dave" wrote:
Hey all,

Thank you very much for the input, first of all. Secondly, I posted a JPEG
of the starter (labeled "ignitor" on the cannister which holds the PCB and
ciruit I am about to referrence) to ABSE on 2/2/10 at 3:30 PM. There
pictured is the (failing) blue choke I replaced with a larger choke. The
one I took out *looked* like it might be a 60 or 75 uH choke, and I put
first a 100 uH choke in its place, and finally a 130 uH that would just
barely fit into the (plastic) cannister. In testing, the choke did not seem
to generate any heat, and my logic was as follows: if it did cause the
starter (ignitor) to overheat it would bring about the demise of the NTE2419
SIDAC bi-directional thyristor diode immediately to it's side (on the right
in the JPEG) thereby shutting down the circuit. Below the PCB (in the JPEG)
is the ballast, which I did nothing with. Since I was replacing a passive
component with a passive component, I wasn't too worried. Burn-in did not
raise any suspicions (1/4 hour of operation in my workshop). I would send
more photos (and try again to figure out this damn camera) but the light is
currently in use. The experimenting I did with the light only seemed to
show that a lower inductance choke resulted in a more "yellow" illumination,
and a higher inductance gave a "whiter" light. I can bring it down if there
is truly cause for concern, just hate to do so unnecessarilly. And there is
nothing in the diagram referrenced above like the small circuit I was
working on inside the cover of the lamp. Don't know what to think about
that...

Thanks,

Dave


Dave, can you post the fixture's name and model information? Or a link
to a reseller selling the same basic unit that one might be able to
research the circuitry?