I have an NBv4 that has been abused a bit and moved from hilt to hilt. In the beginning, RGB was working using a PEx, but after moving it into the latest hilt, I can't get the 2nd channel to work, but the PEx still does. I know I have voltage all the way through the 2nd LED back to the channel 2 pin on the NB, because I can bridge from the 1st to 2nd channel pins on a color mix and #2 will work. This leads me to believe that I toasted something on the board for the channel 2 controller. Is there a way to verify this? I am good with a meter.