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Solved! Big thanks to Greengenes707.

My build was working just fine at first. Then I changed the power cable for longer one and mounted COB heatsinks to the frame. Now it just stays dark and quiet. How to problem solve and test the circuit/parts for faults? I have multimeter with A/V/Ω. How to test the driver when "hot" for an...

What are these I(out)ADJ and V(out)ADJ screws for? B-model is missing those settings. List of parts for now: 5x 1212 Gen6 (Maximum drive current 2760mA) Driving them about 45W each. HLG-240H-C1400B (Constant Current 1400mA max) Cobs wired in series. Graphics shows that Meanwell H-models...

Thanks for your time CobKits. If I remove all these Norwegian 400mA trasformers for the equation, what driver I should choose? I can't buy anything from USA because of import taxes.

How does this cob: CITIZEN 3500K 54,9V CLL040-1818A5-353H1A7 $12 @ ebay: https://tinyurl.com/CLL040-1818A5-353H1A7 Data sheet: http://ce.citizen.co.jp/lighting_led/dl_data/datasheet/en/H_3500K/CLL040-1818A5-353H1A7_P2123_0512.pdf Compare to: CITIZEN 3500K CLU048-1212C4-353M2M2-F1 Version 6 $12 @...

Can't paste picture links to give perspective and information, but youtube links are working. For new member(old lurker) forum settings are tuned weirdly. Thanks for the help larry.

Hi to all. Really much information here in RIU. Great job people.

Thanks, bro!

Hi. I'm from scandinavia and need to ask something about LED light DIY project. I managed to put together long post and the forum software said I need more forum credibility to post any links. Please feel free to give 2 likes so I can start posting like civilized people.