My broken Briddgeport

I have owned a second-hand Bridgeport V2XT for over a year without
being able to run it! Somewhere in that large box of old electronics
hanging on the side something is f%^ed up and I would like to be able
to identify what is wrong before either ripping it all out or trying
to unload the thing at a big loss.

After some playing around I have been able to get the computer, an
old 286 to boot up. Trying to start the machine results in an error
message that says I have drive failure on all axis. I shipped one
amplifier board to EMI and they say it tests out fine. I suspect the
other two boards also work just as well. Indications are thar the
servos are also alright. The fault which may be a loose cable or a
blown fuse or a bad BMDC board is between the computer motherboard
and the servo boards.

It is far past the time when have to deceide to "piss or get of the
pot". With all those blinking LEDs in there something should be
indicating the source of the problem! Since the machine was bought
for home use I am reluctant to put more kilobucks into it.

Eventually I know I will have to replace a lot of the silicon in the
thing, but what is the path of least cost to get the machine problem
diagnosed and patched if not finally fixed?

Bill Lubarsky