The manufacturer received information alleging the dreamstation 2 advanced auto cpap device service required message.There was no report of patient harm or injury.The device was returned to the manufacturer's product investigation laboratory for evaluation.External and internal inspection of the device and observed the following: the display ribbon cable had an unknown white residue on it.The pca(printed circuit assembly) had q3 (phase b) of the motor circuitry blown apart with black burn marks near it.There was brown corrosion on the opposite side of the pca under the q3 area.There was an unknown brown contamination on the end of the iso port tube that sits under the pca where q3 was located.There was unknown tiny white and black contamination at the air input and the bottom of the blower box.There was unknown white dust-like contamination in the bottom of the humidifier.The corrosion and unknown white residue indicates that moisture potentially got inside of the device, suggesting liquid ingress as the root cause.Moisture potentially dripped onto the pca causing destruction.There is visible damage or functionality failures of the device, most likely due to external conditions.Potential moisture getting into the device where the pca is located and is believed to be the primary cause of the customer complaint.
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