While machining a part today the machine, Fadal 4020 1990 vintage, e-stopped with a Z axis amplifier fault. Several attemps were made to reset with no go. There is a fuse on the Amp card which was blown. Replaced fuse which blew again upon power-up. Is there anything else I need to check before ordering a new Amp card? The card appears to be a Glentex DC servo amp card.

Thanks,

Scott