Re: [CAD_CAM_EDM_DRO] My broken Briddgeport

Bill,

Assuming you've eliminated all failures like blown fuses, stuck limit
switches, etc, the most likely cause of the axis drive failure will be
blown transistors or diodes on either the SMD board, or on the Heatsink
panel. My Series I CNC had the same problem. Their Spec calls for
2N6251's for Q1, Q2, Q3, Q4, each SMD board, and 2N3055 for (Q5-Q13) in the
Heatsink panel. I got my parts from Allied Electronics. They were fast, and
very reasonably priced. Hit me off-line, if these part #'s show up on your
machine.

Ray Heckert jnr@...

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> From: kuchean <blubarsky@...>
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: [CAD_CAM_EDM_DRO] My broken Briddgeport
> Date: Tuesday, February 12, 2002 1:47 AM
>
> 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
>
>
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