Thanks, I bought a generic cool white 30W high output LED from Communica to try. When taking out the old one it just popped out without fully heating up the pads! I thought I damaged the pads on the PCB, turns out it wasn’t soldered properly. Resoldered and working perfectly again .The white are 40w x 24v units which you will battle to find, they are 12000K rating. I would do a coversion to 4 x 10w 15000k 2 in parrallel and 2 in series would be you best option. replacemnt board is R2K!!!!
Build quality on these units are not great, had a similar issue with the fans not working. Cleaned out the connectors and they both working again.
Hope this helps someone that’s about to chuck their Zetlight in the bin.