Another electrical failure hit an already darkened Corona del Mar High School on Thursday as teachers and administrators held an emergency staff meeting at a church across the street.
The problem was linked to a Tuesday night power surge that knocked out the school's electricity just a week before final exams and that will keep the campus doors shut to students through Monday.
Southern California Edison workers were at the school trying to fix the original problem when an underground cable failed about 11:19 a.m., sending smoke wafting through the campus and bringing out fire engines, Edison spokesman Dave Barron said. No one was hurt.
Tuesday night's outage affected 2,900 customers--most of whom regained power within an hour. Thursday's problem did not cause an extensive power outage but will set back the repair work somewhat, Barron said.