I have 3 Spectrum King SK400+ fixtures, one was damaged in shipping so now I have 3working fixtures as well as one w/the leds damaged and not working properly. Spectrum King sent out a new fixture and didn’t want the damaged one back, shout out to them for standing behind their product and shipping guarantee. My question is how difficult would it be to replace the lights but use the heat sink and drivers? I’m doing my first led run at this time and I could use the extra light that the extra light would bring to the room. Thank you for whatever help you might be able to offer.
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depends on what got damaged. i repair things like this frequently, well, motherboards and leds, not light fixtures per se, but even tvs are like computers now and i do those as well. have you taken it apart yet to see what is damaged? probably just wires or a connection or something. take it apart and look for damage and put pictures up. if it’s soldering, it’s fairly easy.
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The pic above isn’t very good but it appears to be the individual diodes. Some look cracked others smashed, some flicker on and then some won’t ever come close to lighting again, ever.
This pic is better. If you look closely the diodes are all. Broken and cracked and smashed. I bought the lights second hand from the person that ordered them new from Spectrum King. I assume they knew what it entailed to fixed it and they just sent a new one and said whatever about the broken one. The guys thinking was if it was easily fixed they’d of wanted it back. I got it thrown in w/the other 3 for a steal of a deal. If I can get another fixture for next to a little of nothing and learn about the way led works at the same time, I will be very happy. Sorry I just got off work and smoked now im out. Thank you for your looking at this with me.
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Looks like you need to get in touch with spectrum king to see if you can buy just the LED board. Then you’ll have to remove the old one from the heat sink, clean up whatever was bonding the board to the heat sink and attach your new board.
I don’t think you’ll be able to replace LED diodes individually
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Those individual smd LEDs will be pretty hard to replace. You could check to see which ones are bad with multi meter. It’s unlikely worth the time and tool investment when you could buy something like a quantum board and match them to the SK power supply. Provided, the power supply isn’t the problem.
If you can figure out the forward voltage of the whole PCB you can maybe replace with another similar cob. But if they are wired in parallel you will need to change all the cobs. I would just take the driver and repurpose for another light.
i’d try fixing it, but i do crap like that for fun in my spare time. it also depends on how hard they are to get to on the other side. if it’s easily accessible you can use stranded wire with flux on it as solder tape and they should come right off. just make sure to get them in the right way when you put them back. or you could send it to me and i’ll fix it for you.
Do you have experience with soldering? If you can find the diodes it wouldn’t be too much of a big deal to do if the board seperates from the rest of the fixture.
You could do the rework on a hot plate or flattop if you have a decent thermometer. I’m assuming the board is aluminum which will be really difficult to work with using a standard soldering iron. There are low-temp alloys you can use to remove the broken diodes, but that comes with a whole other batch of caveats.
Absolutely, it’s possible. I’d try to source replacement diodes. Maybe post a picture with a ruler (mm side) so we could take a look too.
Im not trying to fix individual diodes, I was wanting to know if it would be possible to replace the entire board and use the rest of the fixture as is. I just read Spectrum King does updating on the 400+ to make them essentially the next version that they released. I would like to do something like that but diy b/c I couldn’t even start to afford paying for something like thst for the foreseeable future.
The light is powered by 2 Mean Well HLG-240H-36A drivers. Could I use the drivers to power leds? Maybe something like the bridgelux bars? If so how many?
Delite craked diodes.
Solder the contacts directly.
Coat with heat resistant varnish.
How many do you have?
Bridgelux strips run around 19V or 38.4 for the 4fters which is a little bit higher than what the drivers can do. Some meanwell drivers make more voltage than claimed, but it’s too tight for voltage IMO.
Another option is these Seoul semiconductor strips.
These Seoul semiconductor strips have a VF of ~ 33-34V and a nominal current of .650a
10-12 of these strips per driver in parallel will give you 221W on that driver and the strips are ~195 lm/w.
Also digikey might have them a bit cheaper. I just can’t access the site right now as I am travelling and it is t working for me.
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If you absolutely have to replace the individual diodes, you can do it easily brother…
But you’ll need some special tools to do that…
Hot air soldering station and a pair of tweezers will do…
You can do it with normal soldering station too but it’ll be fiddly and is a job for a man with lot of patience…
leds draw about 2 or 3 watts so take whatever your leds are drawing each and multiply by how many there are and the rest is the driver. probably loses some in the conversion from ac to dc too, but not much. honestly that’s just a guess as i have no idea the exact wattage of each led.
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