With brand new batteries installed I turn ON to start the BP4900PH-WE blood pressure test, display show 00 and pressure pum try to start but after several automatic attemps and internal "clicks" sounds, display remain in "00" and pump doesn't star.
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With brand new batteries installed I turn ON to start the BP4900PH-WE blood pressure test, display show 00 and pressure pum try to start but after several automatic attemps and internal "clicks" sounds, display remain in "00" and pump doesn't star.