Just started the other day. When I turned on my detector I got the audio but the screen was blank after it fired up. Turned it of and on it was fine. Detected for a bit and my cross hairs box was leaving trails on the screen evreywhere. Did this for about a half hour. Battery has full charge. Off and on again and it quit after a bit. Now when I use it i get the blank screen every now and then still (audio works). I just cleaned the thing top to bottom and under the coil cover. Even opened the box and blew it out. Fired it up --- no screen display again. Don't want to send it in yet this is my favorite time of the year for detecting.