Now its dead :( 800mw Lasever module

Nooooooooooooooooo! :cryyy:

So close to finish my new project and than this! Can´t belive it

But first the progress so far:

-Getting the lense glued to the focusing ring



-The IR filter is glued to another copper ring



-Connecting more flexible cabels to driver



-Getting the module inside the host with thermal compound



-IR Filter connected to front end (not all the way in yet)



-Close shot of the lens before inserting it



-Lens inserted



-Connecting driver to module



-Driver installed



-Driver fixing ring with spring for battery



-Setup of the first (and last) test



Sadly this was the last test:cryyy: I wanted to compare the power of using a 18650 and a 22650 batt. First i did some LPM measurements. Each test was for about 10s. With the 18650 i got almost 1,8W and this was already suspect. With the 22650 it reached over 2W wich is way to much for what the specs say :thinking: So i went on to test the current. I wondered before about that high current draw of the driver. Using the 18650 it took 4,5A wich was already a lot. But testing the 22650 batt showed that it took over 5A. I already suspected the driver to be broken... but stupid as i was i went for one more short LPM test. Just when pushing the button it did a short flash and then the power suddently fell all the way down to 5mw. Now it´s still shining, but at real low power :undecided:

I am sure the failure was in the driver and the diode got all the power of the battary. Should have trusted my sense.

Now i must find a way to get this thing going again, too much work and money went into the host!

My questions to the experts in here:

-Is it possible to change the diode of the module? (maybe even to a stronger one)
-If not, anyone knows a place where i can get a similar module (i think Lasever is not selling those 800mw modules anymore). I only know CNI has some, but with less power.
-Any other recommendations? Maybe the new Nichia diode (but i am looking for a great divergence, so probatly not good for me).

Oh man that sucks such an efficient module
Which size has your old module?
I know a round one 25mm Dia 90mm length

This one was 26mm in dia and 50mm long. Wich one did you think of?

Thats how it would look when finished:









Hope someone know´s if these Modules can be repaired. I am pretty sure it is the diode. :bowdown:

Its possible but the alignment in such a small module is hard for hobbyists...

How long ago did you get the module? You might be able to send it back and explain how it was defective and get a new one.

it´s been probatly 3 years now since i bought it. and warranty was only for a year, so i don´t think i´ll get a new one :/

but i would give it a try to fix it if there is no other option.

I could probably fix it if you buy the parts. As long as I can get into the module relatively easily. Would be a waste to trash good crystals. And if not I might be interested in purchasing the guts.

How and when did you get this module? I have never been able to get in contact with lasever

Thanks
-Matt

Am sure lasever could fix it--the question is a what cost including shipping both ways.

Maybe email them and ask them if they can supply you with a new diode for the module and cost of same.

You probably shorted out the driver and diode was directly connected to battery power. I suspected it being the case when I saw how you installed your driver. You cramped it up inside, or you probably made a mistake when you soldered the new wires on it.

ALWAYS triple-check driver connections. If unsure, wrap entire thing up in electrical tape so nothing touches the metal walls of the host.

Thanks for your answers!

Qultimatekaiser: thanks for your offer. I´ll first try it myself, but maybe i´ll come back to you if i can´t do it. It´s a good learning lesson for me anyway

@KRNAZNBOY: i just talked to dave from Lasever. You can reach him via email. Luckily he got another 800mw module he is willing to sell :bowdown: So i got that fixed.
But i still want to repair the old module. I asked him if he could sell me the diode itself. Still waiting for his answer. Thanks for the hint Encap!:beer:

@Eudaimonium: No, i didn´t shortcut it in this host, i was very careful with that (killed alot of drivers with my flashlightmods that way)
But it maight already have been shortcutted in my old host. And since i used a weak spring for battery connection it never got too much current. But now with the new and thicker spring & better cables it killed it. Thats my conclusion.

Hope to get the new module soon :yh:

Dave said a new diode costs me 100$. Seems a little expensive to me :/ What do you think?

numquamretro said:

Dave said a new diode costs me 100$. Seems a little expensive to me :/ What do you think?

Click to expand...

How much did he want for a whole new module?

600$ incl. shipping costs.

depends on how powerful the diode is. 100 bucks for what I suspect is a c-mount 808 is pricy, but not unreasonable for a good quality one. If you want to try fixing it yourself, I can help you with the process, just let me know

We're all here to learn and explore afterall...and most importantly...to have fun!

was this the laser that was doing 1.5W at 532nm? yes, I'd say a diode that gets that much green after the DPSS process is worth $100. I guess the one you had may have been a freak diode.

@ultimatekaiser: Thanks man! I am sure i will contact you when i start with replacing to catch some helpful tips

@shakenawake: Yes, that was the 1,5W module. What do you mean with "freak diode"?

I didn´t know the diodes are that expensive... what makes a diode a "good quality diode"? Because i was thinking of getting maybe a even more powerful one. Would that work with the cristal and so on? (i know, runtime will decrease)
I was also thinking about the new Nichia diode, but i am pretty sure the divergence will not be close to the DPSS i had. And divergence has priority for me.