Preliminary investigations indicate that a faulty power cable had caused the breakdown which disrupted the evening rush-hour commute for many commuters.
The North-South Line and Circle Line were affected by a power fault on Sunday morning, resulting in slow train services.
A power fault caused SMRT train services on the North-South and East-West lines to be affected late Wednesday night.
An expert panel, assembled to check the rail network's power system, called for urgent changes just days prior to Monday's major breakdown.
According to the Land Transport Authority, Monday's train breakdown was due to a power fault in the western sector of the North-South and East-West Line.
A power fault caused major train service disruptions during peak hour on three MRT lines and the Bukit Panjang LRT.
A traction power fault caused a short delay at Bukit Panjang LRT early this Friday morning. The service resumed about 30 minutes later.
The nearl two-hour disruption on the North-East Line yesterday was caused by a new train undergoing testing, as it pulled a wire on the overhead power system.
Commuters on a Circle Line train were stranded briefly on Tuesday morning after a power failure disrupted rush hour services.
Train service along a three-station stretch on the North-East Line (NEL) was disrupted for nine hours yesterday due to a power fault.
Train service on the North-East Line between Punggol and Buangkok was disrupted on Thursday morning due to a power fault.
The service disruption on the Downtown Line on Friday, which affected 1,700 commuters, was caused by a power fault at the Operations Control Centre.
A power fault last night caused train services on the North-East Line (NEL) between Dhoby Ghaut and Outram Park stations to be stopped for about an hour.