My A&G Lifesource 321 Scale now does the following. New batteries installed. Numbers do not appear after touching the bar. If I push the bar over and over the numbers come up with all the arrows showing, i.e, weight, target memory, bmi etc. They then go off without giving me the zero's it used to which was my signal to get on. In other words I cannot weigh myself. Any help is appreciated. Scale is about 10 years old. Thanks---John M. Welch