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Thread: Repairing a Fenix LD-01, need some help

  1. #31

    Default Re: Repairing a Fenix LD-01, need some help

    wow, now thats determination. the only other possibility might be that the pcb board itself might be starting to delaminate, causing breaks in the tracing that connects the groung ring and (+) dot on the battery side of the pcb to the other side -looks like there are 3 of those thru hole traces per polarity. from moisture or thermal cycling, the pcb may have begun to delaminate enough to cause intermittent connection, which also explains why overtightening the head of the light made it work sometimes, and heat of soldering made it quit for a while. since your getting all new components anyways, would it be worth a try to just solder a jumper into the holes? ive had this problem on other random stuff, and used just a single strand from a copper wire. dunno if its worth the trouble anymore....

  2. #32
    *Flashaholic* Gunner12's Avatar
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    Default Re: Repairing a Fenix LD-01, need some help

    Very impressive amount of work for troubleshooting the light!

  3. #33
    Enlightened Preamp's Avatar
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    Default Re: Repairing a Fenix LD-01, need some help

    Quote Originally Posted by Journeyman Ninja View Post
    since your getting all new components anyways, would it be worth a try to just solder a jumper into the holes?
    If the new board and all is working fine, then I'll try it . But only on the workbench with lab supply and another emitter...
    On the other hand: full power mode is working best, after flickering around for a while in the lower modes, the light always ends up in full power mode and eventually stops working. Isn't current draw the highest in this mode? And shouldn't this put the most stress on the vias?

  4. #34
    Enlightened Preamp's Avatar
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    Default Re: Repairing a Fenix LD-01, need some help

    It works!!

    Sorry, just had to say that loud . I'm so glad it's working again...!


    The final layout was done with the 3 x 3.2mm small Toko 1226 type coil in mind, since this is about the same size of the originally used coil. Heading for a lower resistance, I included the slightly bigger (3.7 x 3.9mm) Toko 1231 type in the efficiency calculation, being aware that it might already be too big. When I placed the order, I was eager to fit the bigger one in though, and finally managed to do it .

    Please excuse the crappy pictures. Obviously a white background and the automatic macro mode of my cheap workshop-cam aren't a good match...





    I wanted to have the copper coated in chemical gold but I only got HAL. Hope this is going to last at least another three years .

    Oh, and I have another three boards and three inductors left, so if you want to repair your LD-01, simply drop me a line !

    Thank you all again for your encourage and helpful tips!

  5. #35
    Retired Administrator Norm's Avatar
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    Default Re: Repairing a Fenix LD-01, need some help

    Quote Originally Posted by Preamp View Post
    It works!!

    Sorry, just had to say that loud . I'm so glad it's working again...!
    Congratulations

    Norm

  6. #36

    Default Re: Repairing a Fenix LD-01, need some help

    it is clear you know way more then i do

  7. #37

    Default Re: Repairing a Fenix LD-01, need some help

    Quote Originally Posted by Preamp View Post
    It works!!

  8. #38
    Enlightened Preamp's Avatar
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    Default Re: Repairing a Fenix LD-01, need some help

    Everything's still running fine till now .
    The strange thing is, I'm actually carrying both my LD01 and my LD15 on the same keyring !

    FYI: there are two boards and inductors remaining...
    EDIT: now's only one of each...
    Last edited by Preamp; 02-04-2013 at 04:42 AM. Reason: Almost sold out

  9. #39
    Flashaholic* nanotech17's Avatar
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    Default Re: Repairing a Fenix LD-01, need some help

    Quote Originally Posted by Preamp View Post
    Everything's still running fine till now .
    The strange thing is, I'm actually carrying both my LD01 and my LD15 on the same keyring !

    FYI: there are two boards and inductors remaining...
    EDIT: now's only one of each...

    Good Job man - I salute you effort & knowledge.
    since you already "playing" with the light engine - why not swap the emitter to the NW(neutral white) if you can any.
    About that extra board you have - if i were you i will keep it as spare - just in case



  10. #40
    Flashaholic* bladesmith3's Avatar
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    Default Re: Repairing a Fenix LD-01, need some help

    how did you get the head apart to remove the pill?

  11. #41
    Flashaholic* kosPap's Avatar
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    Default Re: Repairing a Fenix LD-01, need some help

    that I wish to know too....

  12. #42
    Flashaholic* RI Chevy's Avatar
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    Default Re: Repairing a Fenix LD-01, need some help

    X2! Mine is staying on all the time and not switching any modes. ???

  13. #43
    Enlightened Preamp's Avatar
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    Default Re: Repairing a Fenix LD-01, need some help

    Quote Originally Posted by bladesmith3 View Post
    how did you get the head apart to remove the pill?
    You simply unscrew it, just like you unscrew the head from the body. Look at the collage-style picture in the first post, there you see the thread. It'll move a little sluggish due to the O-ring.

  14. #44
    Flashaholic* bladesmith3's Avatar
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    Default Re: Repairing a Fenix LD-01, need some help

    my head is screwed together with some kind of glue that will not let it unscrerw

  15. #45
    Flashaholic* RI Chevy's Avatar
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    Default Re: Repairing a Fenix LD-01, need some help

    Mine is extremely tight. It must have some glue or threadlock as well.

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