A burned-out motor in an elevator shaft Tuesday morning at the Pinellas County Criminal Justice Center caused an hourlong power outage in most of the building and a temporary disruption of courtroom operations. Many jurors were sent to lunch early, causing a minor delay in a first-degree murder trial, as county workers and firefighters fixed a tripped circuit breaker caused by the faulty motor. Courthouse personnel were not evacuated. Carl Barron, the county's general services director, did not have an immediate estimate of the damage, which he termed minor. "For all we know, the motor is still under warranty," he said.