Hi i wounder if any one can give me any advise as i am now starting to pull my hair out with frustation. Basicly i had a sevro amp fualt with the z axis so i swopped it with the x and y cards to make sure the fault followed the card which it did so i sent off to be repaired. When come back it worked briefly then poped the fuse on the card and now it keeps on popping fuses no matter what slot i put into (x or y) were as the other two cards work fine in all three slots. Could this be a dodgy repair, when i speak to the fadal engineers they recon the i need to do an insulation test to make sure theres no earth leak but if there was surely this would blow the other cards as well and not the same one every time. Any advise would be great, Cheers