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SI-B8V521B20WW temperature issue?

Posted: Fri Mar 22, 2019 3:43 pm
by Hacko86
Hello,

i have built a light following a setup on this website's guide, i am using 8x SI-B8V521B20WW with one HLG-480H-48A.

Each strip is cooled by a https://www.heatsinkusa.com/1-000-wide- ... -heatsink/ but after 5 minutes full power it reaches 90c temps.

does this setup require active cooling? a bit worried i will damage the strips

Thanks

Re: SI-B8V521B20WW temperature issue?

Posted: Fri Mar 22, 2019 7:44 pm
by unkle_psycho
Don't have experience with the samsungs, but I think its safe to say there is a problem. Are you able to test voltage?

Re: SI-B8V521B20WW temperature issue?

Posted: Sun Mar 24, 2019 6:23 am
by Jolly Green Giant
did you use thermal tape or paste? which brand? second double check to see the strips are firmly pressed to heatsink, the whole 4' length...

a even split of the 10A ( parallel never splits perfectly) it's only 1.25a each.. test is 1.12a.. they really shouldn't be that warm.. test tc temp was 65C. I would assume attached to a sink at 1.25 should be 70-75C tops..

the double checking how they are attached would be my first thought...