SL Argo HP w/ P4 - A little help please!

[SnowplowTortoise]

A little troubleshooting from anyone with a faint understanding of electronics would be greatly appreciated. I recently replaced the Luxeon star in my SL Argo HP headlamp with an SSC P4 U-bin star from DX. Everything seemed to come together fairly simply, but it doesn't work. Not really. If it didn't work at all, I would think there is some sort of continuity problem. As it happens, though, the LED does flash on for a millisecond after connecting a power source. If I wait a second with the power disconnected and try again, it flashes again. Most interestingly, if I wait a second after disconnecting the power and tap the low/hi/off switch, it sometimes flashes (where is that energy coming from?)

So don't sugar coat it for me Doc; does this sound like I have fatally damaged some component of the circuit or does it sound like a smaller, more fixable issue?

 

[SnowplowTortoise]

A couple of further details might help with the diagnosis. First, there was a puff of smoke at one point. I thought I saw it coming from where I was connecting the makeshift battery leads (I used solder wire) to the circuit board contacts. I thought it was just the solder lead melting, but I guess it could have been the important insides of one of those colorful little eletronic doodads in there. Anyway, I just was hoping to find out whether to toss the whole thing in the trash or not.

Thanks again,
Craig

 

[rcnuk]

EngrPaul posted that he had some stars from DX in which the emitters were on backwards (180deg). Maybe too late, usually when you let the smoke out it is finished.

 

[Pumaman]

I have an argo Hp open and ready once my seouls show up. I hope yours is an anomaly, or I may have a similar experience. don't know whats going on.