I have an hds5 and can not get the gps to work. When I turn the unit on and view the chart, it just shows mountainous terrain with the the lake or river. Essentially it is competely zoomed out. When I zoom it in, it does not go to a lake map. What is wrong? I got this unit about 1 year ago and just have not had time to fool with it. Maybe you guys can give me some pointers. I have another boat, which I use much more, that has an hds 10 on it. When I go to the chart mode, it shows a lake map like it should and everything is normal. Could it be that my hds 5 does not have the proper cards or something? I don't think the 10 has a card but it shows all u.s. lakes. At least it shows lakes all the way from florida to kentucky. I would appreciate any help.
Sam

