Gentlemen, On July 27 2012 I purchased at BPS a new in the box Hummunbird 597ci hd. In the past 11 months its been in for repairs twice and it still ain't right. I just got it back a couple weeks ago and got to try it out last weekend. Here's my issue now for those that are more educated than myself. Turn the unit on, wait for it to load, press exit to get to the sonar screen. Press the view button to rotate the display, and there's my problem. I use the split screen with sonar on the right and gps on the left. Well I no longer have that screen. It's always been there before. The only way I can get it to display said screen is to power off, remove sd card, power up, install sd card, The unit says loading data and then I can get the desired screen. Once I turn it off it looses this information and I have to repeat the process to get it again. Any ideas? I don't want to send it back again. I'm unhappy to say the least and I will give it a lot of thought before I purchase a second Humminbird. Thanks in advance, David Mann.