Of course I'm not sure exactly sure the internal wiring in the PCB of the boards at all but it's a start. thanks for the explanation. I have yet to attempt to do what you described due to a combination of confusion, fear and laziness but i will keep it on hand for reference when i get around to it....

I received a pair of QB288 boards from Shenzhen Bava the other day and hooked it up to my HLG-240H-C2100B driver but am only able to get 125 watts out of them. I asked the sales rep, and he told me that the engineer confirmed it was wired in series when they sent it over. I went through a similar ke...