Hi All, Been recovering from surgery for the last year, neck/spine, so I have only got out a couple of times. I went out Thursday to the beach and went to do the auto noise canceling process and I saw the screen was right for it, where I was supposed to be, the circle had stopped and there was No tone, this is a first for me with this, any ideas? I unplugged the coil, plugged it back in, pulled the batteries out and replaced and got the same thing, No Noise Canceling. The detector worked though. Thanks for any input. Rick