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FrozenGate by Avery

405nm S06J getting dim diode

Thanks for the input, Cheech.

Here's the latest:
I had time at work today to fire up my brand new Weller soldering station, and get to fiddling with this diode.
When I opened up the host, I discovered that one of the pin connections to the driver looked to have come loose. I was sure it wasn't dry when I made it.
I also took the time to make sure that all of the connections were thoroughly wet-soldered.
None of this seems to have helped. While I had it open, I inspected the window as much as I could with a pathetic magnifier. I didn't see any debris, but there is a distinctive "fog" just barely perceptible around the dot. So, I think that Cheech might be on to something, though it hasn't been long since I cleaned it.
I will take some acetone or 91% alcohol to it tomorrow.

Does anyone know whether I can get this thing a decent life span if I tune it down to below 400mA?
 





The problem with current spikes has been fixed on the new versions of the benboost. I posted oscope tests and all on page 47 but I think once a thread is that long most people stop looking at the posts haha.

http://laserpointerforums.com/f67/f...iver-tested-working-71433-47.html#post1104257

Running at that current spikes will be in the order of 10-15ma, perfectly safe.

Absolutely don't put a big cap between the diode pins. This interferes with the current feedback system and was the original cause of the current spikes. You can try throwing a 2.2uf in there but at your own risk. (I wouldnt...)

Most likely that loose connection was disconnected for a split second, the caps charged up, and when it touched back a burst went through the diode and damaged it. Happens to the best of us buddy :beer: I killed the first working prototype of the benboost and my first a140 this way.

If I were you Id take it out and make it into a low power pen build at like 100-200ma. Then get a replacement and rebuild the laser. Test the driver out too, just to make sure it hasn't been damaged from running with an open connection.
 
The problem with current spikes has been fixed on the new versions of the benboost. I posted oscope tests and all on page 47 but I think once a thread is that long most people stop looking at the posts haha.

http://laserpointerforums.com/f67/f...iver-tested-working-71433-47.html#post1104257

Running at that current spikes will be in the order of 10-15ma, perfectly safe.

Absolutely don't put a big cap between the diode pins. This interferes with the current feedback system and was the original cause of the current spikes. You can try throwing a 2.2uf in there but at your own risk. (I wouldnt...)

Most likely that loose connection was disconnected for a split second, the caps charged up, and when it touched back a burst went through the diode and damaged it. Happens to the best of us buddy :beer: I killed the first working prototype of the benboost and my first a140 this way.

If I were you Id take it out and make it into a low power pen build at like 100-200ma. Then get a replacement and rebuild the laser. Test the driver out too, just to make sure it hasn't been damaged from running with an open connection.

Last I read on that thread, and I was following it pretty good, until Tsteel left us:cryyy: I was understanding that scraping off the cap between the LD output post or omitting it completely did a better job on spike reduction same thing as what we are stating here.
 
Thanks Ben. I've read many of the pages on that thread...I can't swear I read all the way to page 47! lol

I'll wind up doing just what you said. Considering it fell a couple of times before I got my case and now the dry solder on the pins, it's a miracle this diode didn't LED already.
 





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