Today, I turned on my V3, balanced it, and got a continuous volley of various false signals, even before lowering it to the ground. This took place in two different locations, in the woods, and in the back yard. I mean I got bells, whistles, and every reading imaginable. The machine has been used about 5 times, but not since December. Is there something I can do before I send it back to Whites? Any suggestions would be appreciated. Thanks