I just brought a LED board with 220V AC from here http://www.amazon.co.uk/Enjoydeal-Hydroponic-Plant-Light-Panel/dp/B00V5Y2FWG
I looked inside the board, and am curious about how so many LED are connected together, from my observation there are total 4 Parallel connections， for each parallel connections， there are 4* 14 = 56 led serial connected.
1. Is the circuit designed like that 2.and if one LED light is dead, then the whole parallel connection will be dead ? 3.is this circuit based on constant voltage or constant current？ 4. the led light is about 9 w, so how much light lumen it could draw for these low power consumption led light?