The reported complaints of blank display screen and makes constant clicking sounds on the autopulse platform (serial #34987) was not confirmed during functional test and visual inspection.However, returned autopulse platform displayed a user advisory "(ua)132" (internal watchdog timeout (system error)) but no constant clicking sounds noise.The lcd display is functioning as intended.There was no physical damage was observed on the returned autopulse platform.The initial functional test failed due to returned autopulse platform displayed "(ua)132" (internal watchdog timeout (system error)) during power on.To remedy the "(ua)132", the processor board was replaced.This issue is considered related to the reported complaint, at some point the platform intermittently had a blank screen.After service completion, 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 autopulse platform passed all functional tests.Historical complaints were reviewed for service information related to the reported complaint and there was no previous history complaint reported for autopulse with serial number (b)(4).
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