New style Samsung LM561C Board

Randomblame

Randomblame

Well-Known Member
I'm pretty sure the guys from HLG got a nice price, probably less than $ 35. But they have not relocated production to the USA for nothing.
 
Randomblame

Randomblame

Well-Known Member
nxsov180db said:
I realize there are other costs associated of course, but those associated costs per board are pretty low, all they do is load a reel of leds into a machine and yes those machines cost money and so do the operators. Also being a manufacturer/factory in China I'm sure they buy the led's for a good margin less than I can as well.. You are right though in the aspect if they can con me with diodes at half the cost of what they were supposed to give me they possibly increased their profit margin by +50%.
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I'm sure you can get these boards with real LM561c if you follow my advice above. A customer who buys only a few boards is uninteresting, they want big customers. If you are being lied to, you also have to lie to get to your destination. It's like Poker, you have to bluff them to get the more valuable Samsung diodes into the pot(on the board).
If they think you want to buy hundreds of boards, but you need to test them before you buy hundreds, you'll probably get boards that really fit the description.
 
V

VegasWinner

Well-Known Member
nxsov180db said:
1. Name one thing I said that was wrong.
2. The supplier will not discuss what HLG paid, that would be incredibly stupid on their part.
3. I did not pay $75, I did not pay anything I never purchased from HLG.
4. The price of $75 actually does mean something regarding what HLG paid, it means they paid a lower price than $75 with enough room for a profit, I never claimed to know what they paid.
5. I have not made up anything.
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[/QUOTE]

you have no facts. that is called conjecture. You do NOT know you are making up to argue and you call me a dumbass while you make up information to argue with. name a fact you provided so far beyond retail price. you have no clue to wholesale production, i.e. conjecture.
I have facts.I work with Jeff regularly as my regular supplier. we talk all the time that is how that works, business relationships.
I get real boards with real Samsung diodes that work great too.. facts.
I am not here to argue, just point out the differences. If you have facts about HLG and their production costs, I would love to hear more, as they have NDA's.
I do me not worried about HLG.
makes life simple.
 
Randomblame

Randomblame

Well-Known Member
nxsov180db said:
Had I known what I know now I probably would have done something of the sort. I did however recently email the supplier and told them I purchased a samsung 304 board from a reputable us seller for comparison to make sure I am getting legit lm561c s6 diodes.
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Yes exactly!
They need to know that you control them, just so they do what they should do! That's annoying, but typical for their mentallity. (Hopefully nobody calls me a racist fascist now..)
 
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VegasWinner

Well-Known Member
Randomblame said:
I'm sure you can get these boards with real LM561c if you follow my advice above. A customer who buys only a few boards is uninteresting, they want big customers. If you are being lied to, you also have to lie to get to your destination. It's like Poker, you have to bluff them to get the more valuable Samsung diodes into the pot(on the board).
If they think you want to buy hundreds of boards, but you need to test them before you buy hundreds, you'll probably get boards that really fit the description.
Click to expand...
not a good business model in my opinion.
If I have to lie to get what I want BAD cause.
If he has to lie to sell me what he wants BAD cause too. bad for business
I prefer to do business with HONEST people not LIARS, either a customer or a supplier.
Bad karma to do otherwise in my view of life.
 
legalcanada

legalcanada

Well-Known Member
VegasWinner said:
you have no facts. that is called conjecture. You do NOT know you are making up to argue and you call me a dumbass while you make up information to argue with. name a fact you provided so far beyond retail price. you have no clue to wholesale production, i.e. conjecture.
I have facts.I work with Jeff regularly as my regular supplier. we talk all the time that is how that works, business relationships.
I get real boards with real Samsung diodes that work great too.. facts.
I am not here to argue, just point out the differences. If you have facts about HLG and their production costs, I would love to hear more, as they have NDA's.
I do me not worried about HLG.
makes life simple.
Click to expand...
i don't think you have been following this thread closely. the user you are responding to did not purchase from jeff, he purchased from a different seller on alibaba. i also don't think he received his boards yet. the OP @chuckduck purchased and received boards from jeff, and posted the picture of a diode which @Randomblame is suggesting may be fake. at this point i don't believe @nxsov180db has any reason to believe his boards are fake as i don't think he received them

everyone seems to be arguing and getting pretty worked up about this and all we've seen is a macro shot of a single diode and no other tests or comparisons. let's just let the OP and @nxsov180db test their boards as i'm sure they were already planning on doing and await their results
 
Randomblame

Randomblame

Well-Known Member
VegasWinner said:
not a good business model in my opinion.
If I have to lie to get what I want BAD cause.
If he has to lie to sell me what he wants BAD cause too. bad for business
I prefer to do business with HONEST people not LIARS, either a customer or a supplier.
Bad karma to do otherwise in my view of life.
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Look at the diodes on these boards and tell me they're real LM561c. I do not mean your GGboards or those of HLG, just those on this thread.
If they sell these boards and claim they are LM561c, then they are lying, point!
Of course, I prefer to do honest business. Lies are never a good business model! But be honest, have you never checked the authenticity of your own boards and sold them unseen as real?
I don't think so!
Any reasonably honest businessman should test his goods. No matter if Samung lets produce LED strips or smartphones, before they go on sale, they undergo a quality control, which also includes component verification.

VegasWinner said:
I thiNK you JUST DID
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LOL!
 
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linderstein

linderstein

Well-Known Member
they get these tables because a compatriot of theirs did not pay the nda, maybe that's why he disappeared from instagram with his project.
 
chuckduck

chuckduck

Well-Known Member
Good morning everyone. Got a bombshell for you all. Well....not a bombshell for everyone. I sent Jeff an email questioning the integrity of these chips and this was his respond. Remember....I'm the guy who titled his first post "Watch a moron build a LED light".

He says:
"It is original Samsung led chip,you can test it.i just got feedback from my led agent,he made a mistake,this is Samsung lm561b plus not Samsung lm561c,sorry for the inconvent,I will send you test report for the chip.if you have any question,you can test it by sphere."

A couple questions that will hopefully get answered in between the "I told you so"
comments. Let's assume this is true. How does the C compare to the B? What does this mean for me?

Anyone have a macro of the B for comparison?
 
chuckduck

chuckduck

Well-Known Member
This thread will prove to be quite the learning experience. He is offering to send me LM561C boards now with the promise (LOL) that they will be LM561C. I said I may be interested (just for shits and giggles) and asked how much of a discount. He asked "how much of a discount do you want?" Why is part of me still tempted to see how this turns out? Going to think about it a bit.
If I do pull the trigger on more I'm definitely sending one to COBkits.
 
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chuckduck

chuckduck

Well-Known Member
On another note. In many of the LED discussions I hear (at least I think I do) discussion about the quality or amount of copper (are they traces) being an indicator of quality. I'll attached a picture to show how the copper extends pretty close to the edge of the board. you can see a circle of copper and it wraps tight to the screw hole and down the edge of the board. That mean anything. Give any indication to build quality?
Screen Shot 2017-12-17 at 8.20.16 AM.png
 
Randomblame

Randomblame

Well-Known Member
This is Sammy's LED calculator tool

http://www.samsung.com/global/business/led/support/tools/calculator-pkg

Here is a quick comparison, but for the 561c I took the "worst" A1 voltage bin and for 561b+ I used the middle voltage bin. You do not know which binning was used here.
BTW,
He(Jeff) used exactly the same excuse for another customer who posted his experiences here. I just do not know in which thread but I know he got some double row 16" strips with 96 diodes.
The first delivery was real and the second time he got 561b+ instead of 561c.
 

Attachments

chuckduck

chuckduck

Well-Known Member
For the sake of comparison, here is a pictureI just took of the diode from a Photon Fantom sunboard. Can we assume that they are authentic lm561c Samsung LEDs? I think we probably should. They look like the ones I have. So I'm not sure what the whole "dot" thing means for the real/fake debate.
Screen Shot 2017-12-17 at 8.37.01 AM.png
 
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chuckduck

chuckduck

Well-Known Member
Randomblame said:
This is Sammy's LED calculator tool

http://www.samsung.com/global/business/led/support/tools/calculator-pkg

Here is a quick comparison, but for the 561c I took the "worst" A1 voltage bin and for 561b+ I used the middle voltage bin. You do not know which binning was used here.
BTW,
He(Jeff) used exactly the same excuse for another customer who posted his experiences here. I just do not know in which thread but I know he got some double row 16" strips with 96 diodes.
The first delivery was real and the second time he got 561b+ instead of 561c.
Click to expand...
Thanks for that post. 174 l/w vs. 191l/w best case scenario if I'm reading that correctly.
Ultimately this will be a better build than HPS right? What's your prediction on what I'd get if I pulled the trigger on what he says will be the real C diodes?
 
Randomblame

Randomblame

Well-Known Member
chuckduck said:
Thanks for that post. 174 l/w vs. 191l/w best case scenario if I'm reading that correctly.
Ultimately this will be a better build than HPS right? What's your prediction on what I'd get if I pulled the trigger on what he says will be the real C diodes?
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For sure still better than HPS. The difference could be between 5-25lm/w less depending on the used binnings. But you can compensate it by a certain margin if you drive them a bit lower.
If you buy more boards, then only on the condition that he gives you a replacement for the fake boards or reimburses you a large part of the cost. He knows exactly what he did and the excuse is always the same, someone else is blame.
The bad part is that they get away with it 99 times and only one in a hundred realizes that he was cheated.
 
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