It does it on the water also. It was already at 2.660 when I got the unit new. I talked to Hummingbird about this situation last week and was advised to send it in. Got the unit back and the letter in the package said that there was no problem found so I reinstalled the unit on my boat today and this is what I found. Same problem as first reported and I recorded the video and sent it to hummingbird also. Only thing I get from the tech was they've never heard of it before and I'm the first with the issue. Of course when I asked if it was a normal issue I was told that the video would be sent to their support team and would be getting back with me.

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