Udi information is unknown.Initial reporter also sent report to fda is unknown.No information has been provided to date.This mdr was generated under protocol (b)(4), as a result of warning letter cms# (b)(4).No device history review (dhr) is not applicable or relevant due to the device manufactured date.The investigation did not implicate a service process issue.A product sample was received for evaluation.Functional and visual testing were performed.The device was received in used condition.The evaluation was performed, and the reported issue was confirmed.A liquid crystal display (lcd) was noted to be leaking at the bottom edge.Installed test tool and powered on unit.Removed front cover and investigated further.Found circuit board lcd display was inaccurate.The seal was broken on potentiometers indicating they had been turned after being originally set by manufacturing.Lcd could not be adjusted as potentiometer was found not functional.Reported issue due to damaged circuit board.The root cause of the reported issue was due normal wear and tear.Device was over 19 years old.No further actions are required.
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