The reported complaint that the autopulse platform (sn (b)(6)) made a clicking sound upon powering on, and the lcd screen was consistently blank was confirmed during a visual and functional inspection.The lcd screen was blank due to a malfunctioning processor board, preventing the platform from passing the initialization (power on self-test).This was likely due to failed component(s) on the processor board.Visual inspection of the returned autopulse platform revealed no physical damage.An archive review could not be performed because the platform failed the initialization (power on self-test), and the archive data could not be downloaded due to the failed processor board.The initial functional test couldn't be conducted due to the blank screen and continuous clicking noise, confirming the reported complaint.The malfunctioning processor board needs replacement to address this complaint.Unrelated to the reported complaint, further inspection found that the encoder driveshaft was getting stuck intermittently.This was attributed to a sticky driveshaft clutch area, usually caused by sharp edges from all 12-hex edges of the armature plate or due to burrs on the surface of the clutch rotor.The impact of the sticky clutch was not severe enough to make the platform non-functional.The clutch plate needs to be deburred to remedy the problem.Upon service completion, the platform will be subjected to final functional testing to ensure the device will pass all testing criteria.Historical complaints were reviewed for service information related to the reported complaint, and there were no similar complaints reported for the autopulse platform with serial number (b)(6).
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