The newest saber I'm working on is a FOC running on a NBv3 card in it. I have triple checked the connection pads to ensure I haven't crossed wires or accidentally shorted anything, but when I attach the battery, all the speaker puts out is static and clicking. The momentary switch seems to not work at all and won't ignite the blade. I have tried charging the battery, new speakers, new NBv3 SD card, bypassing the sound card (the LEDs still light). I have had success with NBv3s before. Any ideas on what might have gone wrong?