Who in the area works on Humminbird units? We have a unit that is not showing depth everything else seems to working fine, we changed out the transducer and that does not seem to be the issue. We are thinking it was something to do with the unit.

Call Humminbird. If it is under warranty they will fix it for free. I believe the warranty is 2 years from purchase if you have a receipt. If no receipt it is 2 years from manufacture date. When you call they will give you a return authorization number to put with the graph. They have always turned around any repair I have had done in about a week. Not certain, but I believe all of their graph repair is done at the factory in Alabama. If it's not under warranty they have a repair fee list on their website.