IF the COBS lose 3% per year, after 5 years you would be around 86%. Of course thats just an estimate and in reality the COB could be much worse as it's been noted that compounds in the air tend to react with the surface of the LED further diminishing output.
I would say it's probably a great time to pop some new chips in. You could always order one new chip and just see how it compares to the old ones if you have a reliable meter. You would also benefit from a newer generation chip and could find gains there as well.
I would reach out to
@CobKits and s thin/QUOTE]
That's a great "Right to the point" answer and I really the idea of just ordering a single chip or maybe a couple different but compatible with the heat sinks. That's genius. Have the 2nd or third gen Cree 3590s improved to any great degree and are any other COBs that " blow off" the Cree. I suppose with a little research I could find a cheapish way to keep the old CODs running as supplemental lighting. I'm gonna check that out to today. I have another 600 watts of two yo COBs that I'll work with for another year or two.
Thank my friend.
I don't know the answer, but if you are thinking about replacement, you might look into these, which are supposed to be QB style COB replacements:
https://horticulturelightinggroup.com/collections/quantum-boards/products/qb144-v2-quantum-boards
I'll check that out PJ. Now I have to pick though all kind literature, spec sheets reviews etc..
One more thing if I may. Are the newer and better chips that won't be compatible with the sinks I'm using now?
Tell me gentleman. Do you think there's been a lot of improvement in the output for the newer generations of chip?
Rock on and I hope you have the week off!