The reported complaint of a blank screen display on the autopulse platform (serial # (b)(4) was confirmed during functional testing.The investigation findings revealed that the probable cause of the reported error was due to a defective system processor board which may likely sustained during mishandling because of damaged observed on the device.During visual inspection, a damaged front enclosure on the returned autopulse platform was observed.This type of physical damaged observed on the autopulse platform was due to mishandling and relevant to the reported complaint.The front enclosure was replaced.Initial functional testing of the returned autopulse platform confirm blank screen.To remedy the display issue, the defective system processor board was replaced.After part replacement, the autopulse was re-evaluated.Platform was subjected to the run-in test using the 95% patient large resuscitation test fixture (lrtf) with known good batteries until discharged without any fault or error.The autopulse platform passed all the functional tests.Historical complaints were reviewed for service information related to the reported complaint and there was no previous history of complaint for autopulse with serial # (b)(4).
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