Hello! I wired together an NBV4 with an RGB Tri Cree (the green and blue are soldered together, Red is for FOC), and for some reason as soon as I finish wiring and soldered the negative terminal, it lights up the saber. I thought maybe it was because I hadn't wired the button, so I did that, and all it does is dim the LED a bit when pressed. I thought maybe it was because there was no SD card, but that wasn't it either. I can't figure out why it won't just turn on and off. This is an NBV4 from 2018 where the sound stopped working so I wonder if anything else could be wrong with it? I'm just trying to make a simple stunt with FOC for with no sound and with recharging capability. Any reason the LED would always stay on and never turn off? Please let me know what I should do. Thanks!