Diy broken led panel fix

[RosettaStoned]

This is nothing ground breaking or original. I've seen a few videos on YouTube so I thought I'd give it a try. Found a broken morsen 1000 watt on eBay for $23. Did some research on what I needed after testing. All my stuff...
aluminum plate, 6 cree 36v cxb3070 35k + holders, 12 mono luxeon 3v 65k LEDs, thermal paste, connectors, wire, hardware, tools
matched and cut a new plate to mount LEDs on. Drilled all matching holes, removed heat sink and put on new plate.
Laid out all my LEDs and marked holes, drilled and tapped, then mounted with a little thermal grease.
breaktime.....
finished up mounting and wiring.

Gave a test try....
oops, one string out! Take apart and check everything.
there you go, fixed! It's real bright now
hopefully the girls appreciate the light.
I have another I'm going change as well, Mars hydro 300 watt 6 channel spectrum. Will post when it's done.

[DrPhoton]

Nice, i used to do the same thing with smartphones before they went completely sealed. Everything was modular and easier to repair. I had new smartphones for the whole family.

[RosettaStoned]

Thanks! Yes, screw buying new stuff all the time. Reduce, reuse, repurpose, recycle.

[DrPhoton]

Haha yes.

[Garrett]

How much did it cost for all the components?

[RosettaStoned]

About $260 with the two broken lights. Which will make two lights. I have 4 cobs and 10 mono LEDs left for the second build.

[RosettaStoned]

Here's the math...
the cobs run at 34 VDC @ 800 mA current, that's about 55% powered 5600 luminous flux. The monos run at 3 VDC @ 800 mA current, 80% powered 270 luminous flux.
34*.8=27.2 * 2=54.4 watts + 3*.8=2.4 * 4=9.6 watts
thats 64 watts a string * 3=192 watts being used.
Luminous flux...5600*6=33600+270*12=3240 total 36840 luminous flux.
luminous flux to lux...
E_v(lx) = 10.76391 × Φ_V(lm) / A_(ft2₎
2x2 - 198,271 lux
3x3 - 132,180 lux
4x4 - 99,135
lux is not the best measurement but better than lumens, and I don't have a par meter.
i can not speak of how the light worked originally. I'm sure my spectrum is better being full. Plants use all light between 320-780 nm. Some colors are just used less efficiently than others, all are beneficial.
Next build tomorrow, I can prob get more information on the parts and specs to make a better comparison. Mars hydro to 4 cob 10 mono build.

[RosettaStoned]

Yes, they did. I can add them a little later
Cc drivers

[DrPhoton]

Love it

[RosettaStoned]

Me too, I was wonder the conversion factor for that. Thanks for that! Really solidifies doing it was a good idea and not a waste

[RosettaStoned]

Second light is finished. 4 cree cxb 36 V 3070s 35k, 10 luxeon 3 V 65k. It's running @ 665 mA, pulling about 110 watts. Luminous flux is about 22200 x .014= PPF 311 /110 watts =2.8umol a watt. Am I correct DrPhoton
This one worked when I got it but I assume something is wrong if I got it for $20.

[DrPhoton]

Yea that wouldn't be far off. Of course taking into consideration the actual power consumption through the power supplies and drivers will lower that, due to efficiency losses. But that seems to be on par with what i would expect at that current level. But thats a good enough approximation.

[RosettaStoned]

Yes, of course. Those are not 100% efficient by any means, probably not even 90%

[RosettaStoned]

Couldn't help myself...got these two w/ shipping about $50. Don't really even need both of them but will find a use I'm sure, or sell it if I can. Excited to see what viparspectra has inside. Had a hard time finding any if these that were broke, good news for all you viparspectra users. A lot of kind and advanced Platinum though. Of course plenty of Mars 300s, galaxies, and the cheaper no name brand ones. Which is what the white one is, it does has morsen drivers in it.
I'll probably put about $250 into parts and such. A steal in my book considering the light output I get in return.

[RosettaStoned]

Done..... Two more lights. Viparspectra will be more of a small flower light and the cheapo light will be for the veg room. It could also flower as well because of the lower color. Right now I'm covering an 8x5.5 area with 400 watts roughly and no issues. In fact I think they love the amount of light they are getting.
ill post my stats for these later. I will need a little guidance from DrPhoton for the viparspectra since the mono numbers need some converting first.

Viparspectra - 4 cxb 3590 36v 3000k, 2 far red cree monos 3v 720-740 nm, 4 royal blue cree monos 3v 440-455 nm, 6 red cree monos 3v 620-630 nm.


Cheapo - 6 Vero 29 gen7 36v 3500 k, 12 warm white (3500k) cree monos 3v, 9 cool white (6500k) luxeon rebel es monos 3v.

Parts were closer to $350 but some of that material like wire, wago connector, thermal tape are for other my last build. It will be a 4x4 with 44 2 ft Samsung lm561c diode strips for flower. It should end up using about 470 watts. Cover a 5x5 or 6x6, depends on the application.

[DrPhoton]

Nice work

Cant convert monochromatic light sources, too many variables as the sensitivity changes heavily with different wavelengths. There may be conversion formulas available for different wavelengths for photometry to quantum units. But i do not know of any. I had a quick look online too and could not find anything either.

[RosettaStoned]

That's fine Dan, I'll post the specs of everything then. I'm sure still more efficient than just the mono LEDs.

[DrPhoton]

Just realising we are the only ones posting in this thread, where are the peeps at... this is good stuff here. 😅

Keep it up anyway, such a good idea to reuse or even just improve on cheap fixtures.

[RosettaStoned]

I'm sure most don't see the point.....until they have a broken light. Then they can sell it to me, I'll fix it 😅

[RosettaStoned]

Viparspectra specs....
original light used 136+/-3% watts, new numbers equal about 115 watts used. Since I can't convert the monos over for a uniform number I'll list each color and the specs.
4 cxb3590 ppf about 1.5 umol/watt; cxb3070 would have been a little more efficient.
Red monos x6- 620-630 nm, minimum ppf 2.10 umol/S, minimum luminous flux @ .7 mA is 161 per mono.
Royal blue monos x4- 440-455 nm, minimum ppf 2.77 umol/S, minimum radiant flux @ .7 mA is 1460 mW
Far red monos x2- 720-740 nm, minimum radiant flux @ .7 mA is 500 mW

[RosettaStoned]

If I buy anymore the wife will be giving me more than just the side eye 😋

[RosettaStoned]

Also thanks D.A.A.S.69

[RosettaStoned]

Add in the luminous flux from the reds and the umol/watt goes up to 1.7

[Californiakid]

This is way past cool. A little over my head. Hard to wrap my head around some of the information while my brain is fuzzy from chasing 4 kids around all the time.(lack of sleep).
But I can assure you I'd be figuring it out real quick if my light quite working .

Cool stuff RosettaStoned keep it up my friend. I dig it.

[RosettaStoned]

Thanks Californiakid
4 kids, whoa! Yeah I'd be tired too. I have no kids, probably could tell since my money goes else where 😂 if I can do it I would think most people can. I'm not the sharpest tool in the box for sure.... especially in the book learnin'
I bet a Kind would make a great fixer upper but most want too much for a broken one. If I had one it would be cost effective but I can't spend $250 on a broken one and then dump another $100-150.

[MajorTom]

Just stumbled over here. I picked up a homemade light that I don’t no much about.. Now I’m really curious about it and want to take a look inside.. When I get back home in a couple days and break it open I’m sure I’ll have some questions to post here. These LEDs are tricky and I’d like to find the right one for my setup; including how to use it properly w/o burn and w the optimal quality/amount of light.

[D.A.A.S.69]

MajorTom, I got to see DB several times, what a blessing, But my favorite of all times was in 1972, When He and the Spiders from Mars played in Memphis, I still get chill bumps thinking about that concert. Totally awesome my friend. MickRonson could rip a guitar !!!

[RosettaStoned]

I am definitely not the authority on lights (or anything for that matter) by any means.... But would gladly give some help or tips. Trouble shooting if need be. DrPhoton had the knowledge about light. You might want to read his many fabulous articles. It's a lot to take in and some theories/concepts can be a bit confusing at times...for me at least.

[MajorTom]

Always a favorite.. that must have been great, concerts in the 70’s were in a whole different league. I didn’t get to see him until 82 w Golden Earring. Good concert but by then things we’re settling down a bit.

[RosettaStoned]

I was two in 82' 😋😁

[MajorTom]

Pretty funny. I just took Barbie to the spa in our bathroom sink with a 5 yr old daughter who’s mom was four in 1982. Life is pretty strange.