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My 445 flashes brightly then dies down! Help!

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deam_87

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Oct 8, 2008
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I need some help guys, i dont know what im doing wrong. I have a Flaminpyro SSH build using a microboost drive to power my 445 diode. When i put the battery in, (an 18650) and i turn it on, it flashes brightly for an instant and then dies down to the point where it wont even smoke anything even if i focus it. I dont have an LPM, but shouldn't that mean that its outputting less than 100mW?.. anyways, i tried adjusting the driver and the same thing happens, i took it apart and re-soldered everything too to see if that was the problem and no. And i dont think its gone LED because it flashes brightly every time I turn it on, meaning it didnt just happened once.

Help please!!!!
 





deam_87 said:
I need some help guys, i dont know what im doing wrong. I have a Flaminpyro SSH build using a microboost drive to power my 445 diode. When i put the battery in, (an 18650) and i turn it on, it flashes brightly for an instant and then dies down to the point where it wont even smoke anything even if i focus it. I dont have an LPM, but shouldn't that mean that its outputting less than 100mW?.. anyways, i tried adjusting the driver and the same thing happens, i took it apart and re-soldered everything too to see if that was the problem and no. And i dont think its gone LED because it flashes brightly every time I turn it on, meaning it didnt just happened once.

Help please!!!!
Click to expand...

What brand/make of battery are you using?
 
Okay....good battery so that isn't it. Has the diode ever worked properly?
 
im not sure, its my first 445 build. how can i test it?



I have another brand new 445 diode, but i dont want to thrash this one if its still good and im doing something wrong... could it be the driver??? what if i hook it up directly to a 9 volt batt just to see if it holds a higher output power? would i risk burning it, even if its for a couple seconds??
 
Last edited:
deam_87 said:
im not sure, its my first 445 build. how can i test it?



I have another brand new 445 diode, but i dont want to thrash this one if its still good and im doing something wrong... could it be the driver??? what if i hook it up directly to a 9 volt batt just to see if it holds a higher output power? would i risk burning it, even if its for a couple seconds??
Click to expand...

It could yes. You really have to know whats its set at and if it's heating up or not. I personally wouldn't hook it up directly to an unregulated power source, but I was informed this week that you are able to with out ruining that diode. You best be would be to test the driver output though.
 
oh man :/ i dont even have a DMM, i guess im gonna have to buy one here... im curently in Mexico, so its gonna be more expensive... you wouldnt know whats the scheme is for a 445 test load do you?
 
deam_87 said:
oh man :/ i dont even have a DMM, i guess im gonna have to buy one here... im curently in Mexico, so its gonna be more expensive... you wouldnt know whats the scheme is for a 445 test load do you?
Click to expand...


search.jpg


third link down on google

laser driver test load - Google Search

http://www.rog8811.com/test load01.jpg
 
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