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  1. #1
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    Securitylng 3 x xml. What did I fry??

    Gidday everyone.

    Securitylng 3x xml 4 mode headlight
    1. 1 x led
    2. 2 x led
    3. 3 x led
    4. Strobe

    I opened it up and went poking around with my multimeter and now I've lost mode 1.
    I was checking the voltage for the single led when I think I shorted the V- terminal to the L1- terminal with the multimeter probe.
    I had aprox 3 volts at led 1 to start with. Now I have aprox 8 volts and the led no longer works....

    Question- which component did I fry?
    This is kind of anoying because I use mode 1 most of the time....

    Can't put up pics at the moment, I will when I figure that out...


    Cheers
    Attached Thumbnails Attached Thumbnails Securitylng 3 x xml. What did I fry??-tmp_4764-20170408_11352733304959.jpg  

    Securitylng 3 x xml. What did I fry??-20170408_114237.jpg  

    Securitylng 3 x xml. What did I fry??-20170408_114305.jpg  

    Last edited by BradLuck; 04-08-2017 at 11:37 PM.

  2. #2
    RAKC Industries
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    That's a lot more "complex" than 99% of lights out there. Not many lights have a 3 separate led driver. And people may be able to point you towards things to check but no one is going to be able to tell you that "X" component is toast and replace ot

    Sent from my XT1565 using Tapatalk
    Life on a bike doesn't begin till the sun goes down.


  3. #3
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    Looks like a single driver to me but I don't know about these things....

    Tried to add a couple more pics but it wont let me....

  4. #4
    RAKC Industries
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    Single assembly, multiple driver circuits though. Only way to control individual LEDs besides switching circuits but doing that when you switch on second led the current is cut by half to each led. Then with all three the current per led is 1/3 of what was being driven to the single. Would be almost no perceivable difference in brightness between modes that way.

    So 3 separate "drivers" (easily done with a single inductor so looks like a single driver) is the only way to make that style set up functional that I am aware of.

    Sent from my XT1565 using Tapatalk
    Life on a bike doesn't begin till the sun goes down.


  5. #5
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    Sweet, cheers for your help.
    Looks like 2 driver circuits then. Two of the leds are wired in series.
    I guess I'll just continue to run it the way it is then....it does suck more juice though...

  6. #6
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    Good man...thats exactly the kind of info i was looking for.
    That was very helpful.

    Cheers bud

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