Review: ThruNite TN42 LED Searchlight

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wolfdog1226
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THIS IS NOT A TN42!!

This was the LED of my TN32. It happened 5 days after getting the light! David, from Thrunite chimed in and was very concerned! lol!

Thread is from 1.2014 on CPF.

http://www.candlepowerforums.com/vb/showthread.php?380063-TN32-quot-I-ho...

HERE IS ONE OF THE PHOTOS!

Solitude breeds contemplation which creates clarity. 

Environment molds a person. Perseverance changes them. 

                                                                   WOLFDOG 

FlashMax
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I see, but in my case is quite different. You had a catastrophic failure. Mine remains lite ve very dim (only 3 dies) but the flashlight still works as should be. It seems like a parasitic drain to the led!

Max

wolfdog1226
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FlashMax wrote:
I bought it to hkequipment in hong kong through ebay. The thing worked flawless until yesterday and today I found it lighted this way. By the way how can I upload a pic from my computer?

You have to do it through a host. Many will work. I use postimage.org which works much better than photobucket,at least for me it does.

-click the INSERT ICON at top of page.
-put image URL in the box
-if picture is too big reduce the size in the “relative width” box
-click OK

Solitude breeds contemplation which creates clarity. 

Environment molds a person. Perseverance changes them. 

                                                                   WOLFDOG 

FlashMax
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Max

wolfdog1226
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FlashMax wrote:
I see, but in my case is quite different. You had a catastrophic failure. Mine remains lite ve very dim (only 3 dies) but the flashlight still works as should be. It seems like a parasitic drain to the led!

Your right. Yours is still defective and unusable. Your entitled to get it replaced.

I feel bad for you. The challenge is getting HKE to replace it.Even in the USA it would cost too much to send it back to China.

An advantage of buying[and living in] from USA dealers is that we do not have to deal w/ China for at least the first 30 days. I have had items replaced for free that were 5 months old!

I hope some others chime in to give you ideas on possibly fixing it. I am a novice when it comes to electronics!

I am good at buying lights and then using them every night to walk my Husky Capo!! ,,,,,,,,,he starts howling/talking about 10 minutes before dark!

Solitude breeds contemplation which creates clarity. 

Environment molds a person. Perseverance changes them. 

                                                                   WOLFDOG 

FlashMax
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Max

wolfdog1226
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^^^ I saw that. That is strange. So it will not go full power like that? It only stays in moonlight w/ 3 of 4 sections lit up?

Solitude breeds contemplation which creates clarity. 

Environment molds a person. Perseverance changes them. 

                                                                   WOLFDOG 

FlashMax
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Exact but lot less than moonlight mode. When turn into normal modes, including moonlight all dies of the led fires ok. So strange and sudden!

Max

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FlashMax wrote:
Exact but lot less than moonlight mode. When turn into normal modes, including moonlight all dies of the led fires ok. So strange and sudden!

I do not get it?! It works well in normal modes?

So what mode was it in when you took that picture?

Solitude breeds contemplation which creates clarity. 

Environment molds a person. Perseverance changes them. 

                                                                   WOLFDOG 

wolfdog1226
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FlashMax wrote:
Thanks a lot for your kind answers. But unveliebale or not, suddenly my TN42 that only have two weeks in my hands begun to remain lighted in a less than firefly mode. The curiosty about it is that only 3 dies of the led got fired.

Any help will be very apreciate.

Max

Does this mean that it will NOT turn off? You mention in the most recent post that it works in ALL the normal modes!

You lost me!

Solitude breeds contemplation which creates clarity. 

Environment molds a person. Perseverance changes them. 

                                                                   WOLFDOG 

wolfdog1226
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FlashMax wrote:
Exact but lot less than moonlight mode. When turn into normal modes, including moonlight all dies of the led fires ok. So strange and sudden!

Here is your picture in case people miss the link:

Solitude breeds contemplation which creates clarity. 

Environment molds a person. Perseverance changes them. 

                                                                   WOLFDOG 

FlashMax
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Sorry for the confusion I am not very good with english but I will try to explain again. The flashlight does not turn off completely and remains as depicted. That is like a very very low moon mode.

Max

chops728
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Are all of your cells in properly—— Long click still makes moonlight—double click still goes to Turbo—from turbo short click to off or that almost moonlight (3 dies lit )

FlashMax
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Yes the flashlight works properly and the batteries are the same and in the same position as yesterday. The only difference appeared today was this rare impossibility to totally off remaining thi 3 dies lighted ver very dim.

Max

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I would suggest posting in this TN42 thread. It gets more traffic. http://budgetlightforum.com/node/48789?page=11#new _________________________________________________________________________________________________________________________


 


With that said. I am sure you want to know what is causing that. Good news is your light works and ALL you need to do is take the batteries out until your ready to use the light.


 


Taking the batteries out reminds me of a SEPARATE AND DIFFERENT issue that I have HAD w/ my high powered lights for several years.


Condensation under the lens!


Solution:Silica gel packets in the battery tube and w/ the batteries which are stored in a big pill bottle until they are ready for use. It rarely happens anymore. if it does I just put in a fresh silica gel packet and refresh the other one in the microwave! I have had these packets for over 2 years.


 

BTW ALL those lights are modified by Vinh[V54] W/ The exception of the OSTS TN31mb which Michael Johnson Modified. Mine was the last one he did[470Kcd]. Wink All others were b/w 390/420Kcd.A new XPG2 S2 bin had come out and I benefited from it! This was in December of 2013.

Solitude breeds contemplation which creates clarity. 

Environment molds a person. Perseverance changes them. 

                                                                   WOLFDOG 

FlashMax
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Hi Wolfdog, wow do you meant that some moisture got into the flashlight and it may cause this rare issue. I´ll try to dry the thing like you said. Then I will let you know. Thanks a lot!

Max

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FlashMax wrote:
Hi Wolfdog, wow do you meant that some moisture got into the flashlight and it may cause this rare issue. I´ll try to dry the thing like you said. Then I will let you know. Thanks a lot!

No, No, No!!! I am sorry for confusing you.

Notice I said mine was a SEPARATE AND DIFFERENT ISSUE?!

Sooner or later someone will reply on here with a possible reason/solution.

Until then, REMOVE your batteries when you are not using the light!

I posted a picture of your light on the other thread which gets more traffic. The thread posted below that I mentioned to you.

http://budgetlightforum.com/node/48789?page=11

Solitude breeds contemplation which creates clarity. 

Environment molds a person. Perseverance changes them. 

                                                                   WOLFDOG 

FlashMax
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Ahh!, haha thanks a lot for your effort and support. Now I understand.! Big Smile

Max

EasyB
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Do all of the dies light up when the light is on? You would need a filter of some kind to be able to look directly at the LED when it’s very bright. I wonder if one of the dies somehow became a short. This would reduce the forward voltage of the LED (and cause that die to not light up) and possibly this caused the issue with glowing while off.

wolfdog1226
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^^^^

Look at the picture in post # 72! 3 of 4 are lit.

Solitude breeds contemplation which creates clarity. 

Environment molds a person. Perseverance changes them. 

                                                                   WOLFDOG 

FlashMax
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Hi Easy, I used two polarizer filter to look when the light is in moon mode and as far I can tell, all 4 dies lights ok. But I´ll try again.

Thanks a lot

Max

Max

FlashMax
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Yes these 3 dies remain glowing when the light is off. I looked again the led in moonlight mode and I can confirm that 4 dies are lights Ok. So strange…

Max

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wolfdog1226 wrote:
^^^^

Look at the picture in post # 72! 3 of 4 are lit.

Wolfdog,,,you misunderstood!! Easy asked to turn light on and see if the same [3 out of 4 dies on] thing happens?!! Facepalm

I emailed HKJ….Hopefully some of the builders and modders on here will chime in. They may have an answer…my answers are unrelated to flashlights!!!

Solitude breeds contemplation which creates clarity. 

Environment molds a person. Perseverance changes them. 

                                                                   WOLFDOG 

FlashMax
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Well, I must wait for the knowledge and advice of some of the gurus in modding and electronics. Hope they can help me with this issue…

Max

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If all four dies are lighting at power on, I would suspect the e-switch wires maybe pinched or shaved and bleeding power to the emitter, not enough to fully light them when the light is off. There is always a bit of power going to the MCU via the e-switch, hence parasitic drain. There is a mess of wires between the inside of the head and reflector, they pass thru the shelf into the driver below, the ones I modded had sharp edges around this pass thru hole. I’m just guessing, but that is where I would look, first. Maybe remove the e-switch bezel and button and see if wiggling the wires kills the power going to the emitter, might even be the switch contacts on the back of the switch themselves? Then TN42 does have that lighted Blue ring when powered on.

Again just a guess, I haven’t had it happen to me…yet. but I am intrigued!!!

KB1428 “Live Life WOT

FlashMax
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Hi Kawiboy, thanks for your answer. I´ll try to remove the e-switch bezel and see what happens.

Max

Max

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wolfdog1226 wrote:
I emailed HKJ….Hopefully some of the builders and modders on here will chime in. They may have an answer…my answers are unrelated to flashlights!!!

I do not know exactly how that light is designed, but a weak glow in the leds may not be a problem. Modern leds need very little current to glow.
I possible try measuring the tailcap current with the light off, then you can see if the drain is significant for battery life.

My website with reviews of many chargers and batteries (More than 1000): https://lygte-info.dk/

FlashMax
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Hi HKJ, yes the flashlight seems to perform as should be. But the rare thing appeared suddenly yesterday! It means that something happens…

Max

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A couple pic’s to see what your up against!

KB1428 “Live Life WOT

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I removed the e switch bezel with no results so far. A new thing noted is that this dim glow is not constant. I mean that if I look close to the light magnified on the reflector I see some kind of blinking.

Max

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