I guess breaker 11 must have something to do with the EMV's because if one opens they open on the entire train on a M-7 consist, correct?
Yes, and yes.
The pair of cars that caused this problem is in the house for PI. I looked at the report from the incident, and have my own sentiment as to what occurred to originally disable the train. Having jumped the gun once already, though, I'll wait and see if I can find out the final "official" outcome. The pair is still being tested for 750 in trainline and GTLs.
I will agree with Clem and Peanuts, though, that this was more in-depth than I originally interpreted. This was decidedly not a basic P-wire problem. You can't generate a P-wire if you can't charge your brake pipe!! You can't do much of anything without charged brake pipe.
And possibly the only way to have isolated the trainline problem would have been to retract. I would have to pore over some blueprints to see if cutting out all the EMVs in the consist would have worked. (Move very slowly with crew members ready on dump cords. It would be no worse than plugging EMV on M-1, no?) That probably wouldn't work. Some other things may be tied in to CB11 that would still preclude movement.
The relay that this was traced to is in a bolted-shut box underneath the train. The crew would have no idea that this relay even exists, nor would they be expected to. Workaround was the only option. Four hours is another story, which has already been beaten around.
Tom
P.S. Clem is right, of course. As people who have identified ourselves as employees, we always have to be careful what we say here. I feel there is no harm to the LIRR in discussing this. The incident happened. It was reported in media. It is not a secret. It would be foolish not to learn from it.