new edc triple xhp70 not firing up

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DB Custom
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The standard ShengJie XM-L2 would be a good one for those cells of yours. The light is about $75 and is very nice, it’d be a great long run time light for emergency type use and a club for those iffy situations.

light junkie
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Do you have a link?

Lj

light junkie
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Thanks Vnre I just want a mega light I don’t even have any more fun c8 any more I started last month with 12 lights now I have one sipik 68 zoomie and I never owned a big light so I’m trying to get one

Lj

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That’s cool I have made 5 unfire 68Bs with this direct drive. https://www.fasttech.com/p/1114502 and xplv6 lions for other people when I went to make mine I fried 3 of them of my own so inly one I have running is stock one and I tried to hop up my c8s with XML2-U4 FROM Rmm And direct drives friends all the dd fet driver except 2 for my pastor finally got fed up and threw my soldering iron in the trash along with c8 hosts and fried unfire68s

Lj

light junkie
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Hmm maybe lime DB SAID solder joints somewhere come loose?I checked with multi meter in diode mode and the driver passed I tried continuity test at tail and everything passes only thing I can think of is solder somewhere on emitters ?

Lj

Jubeldum
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Vnre wrote:
I’m going to try this driver instead: www.kaidomain.com/Product/Details.S024015

That’s a single mode. Wouldn’t you want a 3 mode so you can go to lower power when it gets hot?
4-18V 3-Mode Drive Circuit Board for 3 x Cree XHP70
Don’t forget this.
31.5m x 1.4mm Partition Boards for LED Flashlight Drivers

light junkie
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Yeh that’s a pretty decent one I looked at lck led out of Korea and feilong out of Aliexpress had some also give them a look a

Lj

DB Custom
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The ShengJie tripe XM-L T6 still shows available at CNQualityGoods.com.

That’s where I got the one I have here, took a while though.

I don’t know what’s going on with those lights y’all got, if he says he tested em before shipping em I’d tend to believe him so if there were something wrong it would have happened in shipping. One of those things someone would just have to go over the light and find the issue.

light junkie
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I am just wondering what would make ago good host if I wanted to start from scratch to make a xhp single double or triple using 26650 batteries

Lj

light junkie
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I got my information about these batterieshttps://www.fasttech.com/forums/2197901/t/1602507/-/1batteries but you have to read down through link and this why I bought them

Lj

light junkie
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So what seems to be the issue with the one sent for repair?

Lj

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It’s still hard to believe but I got a couple of pretty detailed pms from the member who is repairing your new light and told me what he found !This bad news for the vendor who I felt was respected here and had a good reputation and that’s a big chunk of change per light to have this happen 3 xs right out if the box.

Lj

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That battery is 3.7V, new battery 26650 5200mah 45A Released recently.

Grace

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Hi everyone,

light junkie and his friend asked me to see if I could repair these lights and I did.   In addition I was asked to post my findings in this thread.

Please note:   This post is neither an endorsement of the position of any party involved.   I am neither backing nor opposing the buyers position or sellers position.    I do not know why the buyer and seller were not able to come to an agreement for repair.  I have not had any contact with Ric, so like yourselves I have only one side of the story.   


Q:  Did the lights work when they arrived at your house?

A: No. They were in pretty bad shape by the time they arrived at my house.   In one light the domes were all 3 detached from the emitters.   The second light had domes in tact, but did NOT come on when I put power to it through the switch or with a jumper.

Q:  Why didn't the lights work?

A:  Difficult to say definitively.    Based on my examination of both lights I would say its a very strong possibility that they shorted out as a result of the metal reflector sitting directly on the emitters causing a short.

This is a problem for the obvious reason, but also a problem for the domes of the emitters.   The heads of these lights separate at the bezel, but also in the center making the head 3 parts.     The reason I believe all 3 domes were tore off in the one light is because the center portion slipped/twisted and when it spun the domes were tore off.

In the second light I tried very hard to remove the bezel without this happening and failed.   Therefore I had no working emitters left to test. I also tested the drivers but was was unable to use either of them in the repair.   One was DOA and the other did power up, but may have died at my own hand because of misuse.


The Rebuild:

For one light I was asked to build it as a high output light with the 3 xhp70s and the second to put 3 dedomed XPLs in it for a thrower.    

For the XPP70 light  I did attempt to use a driver similar to the one of the larger China boards that I thought would work.

http://www.kaidomain.com/Product/Details.S020148

However this was a problem because.


"Over-heat Protection:  55-60 degree. When it becomes too hot, the driver will automatically ramp down its brightness, and flash once per 5 seconds. Make sure you "heat-sinked" the driver."


The driver overheats long before the head of the light.   Even with some added metal to the board the results were not good.   I guess if a full custom heat sink was made for the driver it might work, but seemed unlikely so I moved on.

At this point I don't recall having seen dales post, but having read the thread over I see that my solution was the same.   FET driver with a dummy cell.


The XPL light was made FET driver and 3 cells in series.



Now here is another reason I think the cascading failure of these lights was caused by the reflector.   I noticed that it did sit on the emitters fairly hard, and so I checked for shorts, and sure enough.   It shorted across the pos and neg sides right around the dome of the emitter on at least one emitter if not all three.

In some cases contact here is not an issue because there is a thin membrane over the metal on there.   However with this large reflector bearing down on it a short was easy to get.

My solution was to bore out the reflectors so they no longer touched the emitters.    Then put a small dab of epoxy on the center part of the head where it screws together so there would be no chance the top half could spin the reflector and tear off the domes.


Conclusion:

Q:  Is it possible that what both parties involved are saying is true?    Could Ric have tested the lights, and light junkie and the others still got duds?

A:  It seems possible to me that the lights could have been assembled and tested, then upon shipping even a slight jostle from the ride caused the reflector to penetrate the thin layer of silicone (or what ever) on top of the dies causing this short.    I certainly found it easy to get a short there.




Once again this post is not an endorsement of anyone's  position.   Just relaying the information I have as best I can.


Have a great day everyone Smile



In Him (Jesus Christ) was life; and the life was the light of men. And the light shineth in darkness; and the darkness comprehended it not.
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MRsDNF
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Thanks for the input VB. Either way it sounds like these lights have a bit of improvement from the manufacturer before they are fit for sale. 

 

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light junkie
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Very late response ,VB but i appreciate your honesty and all ypjr brotherly Agape love

Lj

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