On (b)(6) 2020, the returned autopulse platform (serial # (b)(4)) was service for preventive maintenance (pm).During the functional testing, the autopulse platform displayed user advisory "(ua)41" (patient temperature sensor failure) error message.However, during run-in test for 40 to 60 minutes, ua41 could not be duplicated.Possible root cause could be due to intermittent technical problems in the temperature sensor that may not be directly identified during testing.Also, the lcd screen flickers.The probable root cause for the flickering lcd screen was due to a defective lcd screen as a result of normal wear and tear.The autopulse platform was manufactured in 2014 and is 6 years old, past the expected service life of 5 years.The service repair and final test were not performed because the customer declined the repair quote.No physical damage was observed on the returned autopulse platform during visual inspection.A follow up will be submitted once customer decide to get the device repaired.
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