A steris service technician arrived onsite to inspect the unit and found that the power supply on the wall control was damaged.The loud noise and smoke reported in the event were a result of a blown fuse on the power supply.The lighting system was installed in 2010 making it approximately 12 years old and is not under steris service agreement; the user facility is responsible for all maintenance activities.The technician made the necessary repairs, tested the unit, confirmed it was operating according to specifications, and returned it to service.No additional issues have been reported.
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