I have an Interact 1 MKII with the Heidenhain 2500 control and KTK spindle drive. Periodically and more lately I have been getting spindle faults. It seems to repair itself if I turn it off and walk away. There are many posts about the KTK drive and the MT1-1 board problems. How do you tell which one could be causing the fault? I have seen posts on sending the board out for rebuild and also swapping out the drive and swapping out the motor and drive. I have a little experience on the electrical side. This machine could be the most unused Interact on the planet as it had set in the back of a school for years and now sees only periodic use. I would like to keep it running.
Any advice is appreciated.