My amp flashes the protection light, then flashes the green light, and it keeps going back and forth, and the subs don't make a sound. It doesn't smell blown. the light stays red and then it flashes green only for a second and then it turns back red and it repeats. could anyone tell me what the problem could possibly be. would anyone have a rough guess at how much it might be to fix it and would it be worth it to get it fixed?