Acutrac 22 Pro Satellite Signal Tester AC22PRO2 Perfect 10 with Charging Adapter

Tester, adapter and beat up case. Listing as for parts/ not working because I don’t know how to properly test and… I hear something rattling around inside of you shake it. When plugged in it powers on no problem and says it “charging battery”. When I press the on/menu button, nothing happens and doesn’t “press” the way the other buttons do… maybe that is what I hear rattling