The XL100 driver board has a chip with marking 165g . Which ic-type is that code? Manufacturer? Does someone know this?
Your images are oversize, when you post an image please remember Rule #3
Rule #3 If you post an image in your post, please downsize the image to no larger than 800 x 800...
I did a search yesterday and found your interesting post after I wrote my question.
Thats right... I only want to swap the emitter against such one with more lumens at the same current.