Thank you so much to everyone in this thread. Not only did you help, you quickly gave me Multiple options and explained everything so clearly I think I understand a lot more now. You guys are awesome. I'm glad there is a forum with such knowledge and willingness to help that I can be apart of. I'll ...

Can you tell the model from this?

Oh. They are in series.. I think lol... Back to basics

If I had to guess, there's 12 led drivers, 2 fan power supplies? 1 driver for each of the 6 COBs and 1 driver for each of the diode banks... The voltage seems ok, 30 - 45v DC to run a 36v Cree chip.. But isnt 1200mA too much to run a single chip? Could there be 3 sets of 2 drivers in parallel? I've ...

Ok I couldn't help myself. Looks like they are all the same, it's hard to tell (for me) if there's separate drivers for the epistar diodes and COBs or if they drive each COB and block of diodes around it. But all drivers appear the same, 30 -45VDC output Constant current 1200mA I'm going to have to ...

Wow, thanks heaps for the speedy reply. Yep they are the bubble lenses, im not too concerned about keeping them. It's the black diamond perfect sun COB LED. Allegedly it can yeild 2 lb - 3lb pulling 675w from the wall... That's what I fell for when I first started looking into lights.. it didn't tak...

Does anybody know what chips I can drop into replace the old COBs?
I think they are cxa2520s run at 50w but I'm worried they are the very bottom bin.
If anyone knows off hand what I can change to get a bit of a better light I'd be extremely grateful.

Ls_ls