Reply to having some problems

hey, having some trouble with my midi fighter, from the start the lights would be pretty random, some would stay on and then go off, but it all worked ok, then after 2 days it just stopped working, still had power as the lights went on if you pressed the buttons, but it didnt seem to sending any midi information. tried to do the re flash thing, to see if that sorted it but now it seems pretty dead. oh yeah what is a line breaker?
thanks