I have a HDS 7 gen2(less than a year old) and this is the 2nd weekend in a row that the depth would flash on and off. Then it would show 56ft knowing that I'm in 11ft of water! It would stop for awhile then start doing it again for awhile.The battery was fully charged the night before so that's off my list. I came pretty close of throwing it in the lake today. Would anybody have any idea why this is happening? Do we have a Lowrance expert on here? Thanks for your help!