Hi i'm new to this forum have just aquired a Ketron XD3 on a trade the guy told me he loaned to a friend and it didnt work when he got it back he told him it done some sort of dump whether that be a midi dump or what i dont no problem is when its turned on now all you get is a bunch of red lights on and no sound it has a hard disk fitted also any help pleeeeeeez greatly appreciated thanks