What you are probably seeing is the fire button rubbing the ribbon or maybe a loose connection of the ribbon at the board.... at any rate what you are seeing has been seen by many and is almost always a mod makers issue... It's your decision on whether to open it up but if it is a damaged ribbon then you are going to need a new display and Evolv sells them. If it's a loose connection at the board then reseating it could fix it as long as the ribbon isn't damaged... hopefully you have the ability to take the mod apart, reposition the ribbon if not damaged, reset the ribbon at the board if needed, or replace the display, and get it back together in working order...