I have had a PC with this case for some time now, but only occasionally did the RGB on the fans work correctly, sometimes it was perfect and they all lit up as they should, and now it's back to only one of the 4 fans lighting up blue.I have connected all four fans to the LIGHTING NODE CORE and still it doesn't work anymore, does anyone have an idea how to solve this problem or do I have to get a new Node Core? Thank you very much in advance for your help.