I have a new one, haven't used it but have used one before. Was stored,in a barn with a sort floor in a wheel barrel. I know now moisture and cold under 40 isn't,good. Never got below 40 but was moist air. Anyhow checked battery , replaced battery, fine tuned it. Same thing every time when i turn it on it blinks on and off light real fast. It detects metal but not 4 inches, maybe 2. I put some nail clippers under my slippers it wouldn't detect.
i have been on there site and nothing on what lights blinking means, googled and found nothing. I also watched there fine tuning video and,it shows the green light supposed to blink every 5 seconds to show its on. Mine doesn't do that.


so I'm lost what to do.
Any idea?