I just finished my fifth and th Techno esel retrofits. I looked at your pictures and you have the stepper motors. For both customers I custom built a 3 axis control unit that operated the brake and runs the three stepper motors. The existing drivers that Techno used look like old fazsshion bipolar drivers that were sunbect to stepper motor resonance. The control unit I built for these guys used burnout prooof G203 step motor driver with a charge pump for the two relays. W
What I did was to have the customers ship me their stepper motors and cables for the motors. I then made adapters that work with my control but or can be removed and used with the xisting box if there are any files that must be maintained there. I use mach3 and provided the config files. So far each of my customers were delighted with the new system especially because it eliminates that archane cnc control lauguage that Techno used.
If interested ina retrofit which is far cheaper than the one that Techno sell contact me at email@example.com