Hi. What you're describing is a power issue 99.9% of the time. Please install a brand new alkaline type nine volt battery with an expiration of 2023 or higher. If the installed battery is weak, old or both, it will have enough power to illuminate the ready light, but not be enough to operate the scanner mechanism.
When you power the scanner it should flash and beep (very quickly) before the green light comes on an stays on.
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Correction : it will not have enough power to illuminate the ready light.
When I press the button green light is on but that is it. Does nothing except green light on. Does not sound when I lift it up, does not sound when it passes and obvious stud, as in nothing, just a green light when I press it.