I have a 1981 VMC with a spindle that will not turn on. I believe the Sweo 800 series board (Sweo 0028) to be dead because it has the ready light on and the spindle switch is on. I test the power across various jumpers and there is power where there should be and where there shouldn't be. I can hear M03/M04 relays click when activated. Repairing the board starts at around 450 and keeps going to $700+. This machine isn't really worth much but it would be good to have for its large table and 4th axis.
Is there any way I can replace this setup with something else that will still talk to the Fanuc 6m controller?