A biomedical engineer (biomed) at a user facility reported that the fresenius 2008k2 hemodialysis (hd) machine had been removed from service due to fluctuating temperature and high temperature alarms during set-up.A patient was not connected to the machine at the time of the incident and there was no harm to any patients or individuals as a result of this malfunction.During troubleshooting, the biomed observed discolored and burned resistors #10 and #11 on the power control board.The biomed stated that near these resistors were burned and blackened areas with black soot.There was no damage noted on any other components.There was no burning smell, smoke, flame, or spark reported.The power control board was the original fresenius machine part.The biomed replaced the power control board with a new fresenius board.When the new part was installed and the machine turned on, the biomed immediately smelled a burning smell and saw visible smoke and spark.There was no actual flame or fire.The biomed turned the machine off and the power control board displayed the same burn damage as the first board, which blackening at resistors #10 and #11.The biomed order a power supply to resolve the issue.The machine is currently out of service.No parts have been made available to be returned to the manufacturer for evaluation at this time.This submission is being filed for the first event of burn damage observed on the original power control board.
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Plant investigation: no parts were returned to the manufacturer for physical evaluation.Additionally, no on-site evaluation of the unit was performed by a fresenius regional equipment specialist (res).The unit was pulled from service for evaluation by the facility biomedical engineer (biomed) following the event.The biomed ordered a power supply to resolve the issue.The machine is currently out of service.A records review was performed on the reported serial number.An investigation of the device manufacturing records was conducted by the manufacturer.There were no non-conformances or any associated rework during the manufacturing process which could be related to the reported event.In addition, the device history record (dhr) review confirmed the results of the in-progress and final quality control (qc) testing met all requirements.The investigation into the cause of the reported problem was not able to be confirmed.A definitive conclusion regarding the complaint incident cannot be reached without a physical examination of the complaint device.
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