Ok I went to an old park dated from the 1770s and I was roaming around and my machine started to chatter and beep like crazy.I would have to restart it and it would be ok for maybe 30 seconds to a minute then it would start back up again,pretty much everywhere I was searching.I had to keep doing this for my whole hunt,needless to say I found nothing.I have been hunting an old grove prior and nothing like this happened there and I know there is alot of trash there.Could it be the minerals in the ground or is this park just way too trashy? Iv hunted this park with my fisher for 15 years and nothing like this happened with it.I found my 1804 half cent there along with many wheats.indians,large cents and silver including a seated dime. I also noticed that when I first turn it on the screen is just a little dissorted,like the border around the "serious detecing" screen when it comes up.It is very minor and its been doing it since I first recieved it and had no problems till now at this park. Whats do you guys and girls think?