The reported complaint of a blank screen on the autopulse platform during power on was confirmed during functional testing.The investigation findings revealed that the lcd was missing pixels.Therefore, the root cause of the reported blank screen was due to a defective lcd as result of wear and tear.The returned autopulse platform (serial # (b)(4)) was manufactured in february 2011 and it is 8 years old, well beyond the expected serviceable life of 5 years.Other than the missing pixels on the lcd, there was no physical damage on the autopulse platform was observed during visual inspection.Initial functional testing could not performed due to platform's blank screen.To remedy the reported issue, the defective lcd identified during service evaluation was replaced.During re-evaluation, the autopulse was subjected to the run-in test using the 95% patient large resuscitation test fixture (lrtf) with good known test battery until discharged without any fault or error.The ap platform passed all functional tests and it is ready for clinical use.Historical complaints were reviewed for service information related to the reported complaint and there was no similar complaints reported for autopulse with serial number (b)(4).
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