Hi Muzzer,

Thanks very much for taking the time. Appreciated. The picture, to me, looks worse in the picture than in real life. None of the copper traces on the pcb look blown, but I could be wrong. I was thinking about cleaning the burnt area with 99% alch and see how it looks then. I do understand your point on caps. I would imagine that schematic diagram for MENTOR II DC drive is going to be impossible to find. I found a place that can repair / replace those boards at 700£+VAT but my worry is what caused the problem in the first place. The last thing that I want to do is to advise someone to send that DC drive for repair and than it turns out that something else is causing the problem.

The idea of replacing the motor with something current is very appealing given that mechanically machine looks brand new when you look at the surfaces.

Once again, your help is very much appreciated.

Regards, JJL