Hey guys. I have an older Lowrance lcd depth finder that I am having trouble with. It will start out okay just idling along, but when I get planed out it starts flipping out. It will sometimes show the bottom, sometimes not. The last time I had it out, for some reason it would show 1.5 to 1.7 feet for awhile, then back to right, then back to blanking. It is an old unit, and I am looking to replace it anyway. Just wondered if it was actually messed up, or if there is something that I haven't though of. It is connected to my starting battery, and the transducer is below the bottom of the boat like it should be according to the Lowrance manual. Thanks for the help.