Ghaziabad, Sept. 6 -- Residents of nearly 1,500 flats at a high-rise in Ghaziabad's Raj Nagar Extension have been grappling with repeated power outages since Tuesday, with some forced to move out amid fears for vulnerable family members. Officials of the Paschimanchal Vidyut Vitaran Nigam Limited (PVVNL), the local discom, said the problem stemmed from internal equipment failures at KW Shristi, which has 1,468 flats across 11 towers and 28 shops. The discom maintained there was no disruption in its external power supply. For many, the outage became more than an inconvenience. A 30-year-old resident said he had to shift his ailing parents to his brother's home in Indirapuram after his father's oxygen concentrator stopped working. "I had to carry my mother down unlit corridors in the middle of the night," he said. The outages, residents said, triggered a list of problems: drinking water supply was disrupted as reverse osmosis filters stopped functioning; toilets ran dry, lifts stalled, and families living on the 20th and 21st floors had to climb down multiple flights of stairs. By Thursday, four towers were completely without electricity, and diesel generator (DG) sets also stopped working. "On Friday afternoon, power was restored to seven towers, but four continue to run on rented DG sets," said Dishyant Kumar Tyagi, vice-president of apartment owners' association. Ram Pravesh Bharti, the sub-divisional officer of PVVNL, said, "Initially, a high voltage device malfunctioned and later the vacuum interrupter also malfunctioned." The department said that they have outsourced the electricity work to a third party. "The issues persisted since Tuesday and substantial time was consumed to check the equipment. The ST devices had to be cleaned and dried up," said PK Mishra, general manager of the maintenance department....