Took the boat out this weekend and I'm getting the "- - -" for incomplete data on the depth finder. Sometimes if we stop the depth will come up, then go back to the "- - -" like it can't read the bottom. We were only in 12-15 feet of water. Even when sitting at the dock in 5 feet it won't work sometimes. We're in a sand bottom lake.

By the way....it's a 2007 Outback V with only 5 hours on it.

Any ideas?

Craig