Metro-North said that computers tied to the system lost reliable power at approximately 7:45 p.m when one of the two main power supply units was taken out for replacement. Technicians did not realize a wire on the other power supply unit was disconnected.
The power disruption forced more than 50 trains on all three lines were forced to stop at the nearest stations and wait until a backup power supply could be connected.
All trains had light, heat and power during the disruption, and no customers were ever in danger during the outage, according to Metro-North.
Repairs were made by 9 p.m. and trains began moving by 9:30 p.m., but delays persisted throughout the evening hours.
Click here to read the full Metro-North statement.
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