The complaint device was returned for evaluation incoming visual inspection found no anomalies.Technical visual inspection found no anomalies.Device evaluation identified that there was a defective power board and damaged rear connector housing.The power board was refurbished with no parts used and the rear connector housing was replaced.The circuit boards were inspected.The front/rear connectors and case were inspected.The device was calibrated.The firmware was set to p.01.46.All pcbs were tested and passed.The flow rate, gas calibration test, and leak check, power on, and final visual inspection were all tested/performed and passed.The root cause was determined to be the defective power board.This type of event will continue to be monitored.
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