[harryn]

Thanks for the replies.

The spindle motor is AC, and the speed control is manul - there is a knob for it, which is fine for my use. The motor does not turn on when run through the circuit, and it looks like it was tampered with underneath, so I assume that the speed control has not worked for a while.

The speed control is what I am trying to figure out, and if I can just swap that out with another method. In other words, is this a voltage based speed change, frequency, DC - no idea.

Anyone have a manual for this thing ? I sent a note to the company that owns spectralight now and of course have some limited hope that that will be helpful.

I saw the interlock switch for the lid, and from its "sound", if seems like it is working, but I do need to check that with a DMM.

The steppers look like conventional ones, 200 steps, etc, so those are no problem for getting a mach 3 based drive running on, or just replacing as needed.