This report is being updated to provide investigation results.The device history record (dhr) for the complaint device has been reviewed and it is confirmed that the device met all design and quality specification when it was shipped.The instructions for use (ifu) shipped with the device provides the user the following information related to the reported event: do not clean the videoscope cable socket, the terminals and the ac mains power inlet.Cleaning them can deform or corrode the contacts, which could damage the video system center.Conclusion: more than 13 years have passed since the subject device was manufactured, and it is presumed that the lock mechanism of the video connector socket was worn away and failed due to repeated use for a long period.Because of the failure, it is presumed that the connection of the video connector was unable to be fixed and became loose, and the electrical contacts of the connector became unstable and the image transmission between the endoscope and the video processor was hindered, and then the image flickered when the endoscope cable was moved.It is presumed that the corrosion found on the device occurred because the user left the device wet.
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