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The way I see it is if you are having to add 10k resistor then you are adding it across the range so instead of dimming to 10% you will dim down to 20% at full dim as you have added 10% the only way I can see to get the adjustment is to reject any pot that doe's not meet spec

It is an auto he did say it was a Maxigom and looking nice

should not need prof of purchase it normally goes by serial number and date of manufacture you can check if it is in warranty with mean well direct.

@pop22 If your driver is less than seven years old RMA it. With mean well

look nice Realstyles you know that mid day sun is 5700k did you get much stretch with the 5600k the buds look rock hard

If one board goes the other will burn out so put a fast blow fuse on the positive side of both boards at the rated max for the board

Now I do not know if this has been posted but if you want to know how HLG works compared to 1k hps this chap is doing full room runs side by side https://www.youtube.com/channel/UCDY8sQMuA9Hfx_5w-8J4afg/featured

HPS drivers will not work, you would need new drivers

that's why i get Samsung strips form digi key

The lm561b+ is only 10 L/W less than an lm561c if driven at the mA so still a good chip.

Even if these chips are the LM561b+ they still put out 178.5 L/W 116 mA in 4k 80cri. so they will grow weed fine F*CK the haters

If all the components conform you are ok

Ive just had a quick look about and a company can self cert but only on minimal risk products. hope they are classed as that.

If they have cert's then they will be fine, but as far as i know it is the product that has certification not the company. So unless they have submitted a board for testing then no.

oops I was looking at the qb288 lol

What @diyled is trying to say is they will NOT be CE certified there not able to be sold in the UK.

Look like proper lm561c's

I've checked the driver I use and mine is 94% according to mean well.

I have some of the F564b's in 4k and running them at 116mA per diode you get 188 L/W with 6% driver loss.

If you read it correctly he said he ran1 up to 377 watt