IBM on Thursday expanded its recall of certain 15-inch monitors, saying hundreds of thousands more units have a potentially faulty part that could create a fire hazard.

The computing giant issued the original recall last March, covering its G51 and G51t models of 15-inch CRT (cathode ray tube) monitors. The company said that models produced between June 1997 and September 1997 resulted in 117,000 units recalled worldwide, 56,000 of which were in the United States. The monitors had a component that could fail and emit smoke. IBM said it has received seven reports worldwide of monitors overheating, with one resulting in "minor property damage."

The updated recall notice, posted Thursday on IBM's Web site and that of the U.S. Consumer Product Safety Commission, expands the recall to cover monitors made between June 1997 and September 1998. The expanded recall covers a total of 235,000 monitors worldwide, with 119,000 in the United States. The number of recalled units represents roughly a third of the 685,000 units produced throughout the monitors' lifecycle of June 1997 to April 1999.