Humminbird 400tx, no fish on screen!

dtclements

Cadet
Joined
Feb 4, 2007
Messages
15
Hi Guys,
I have a humminbird 400tx that doesn't spot any fish! The water temp and depth are working, but no fish.

No, this is not a joke. I fished all day the other day and it didn't spot a single fish. We were trolling for stripers so I know I would have run over at least 1 fish all day.

I did a factory reset several times. I adjusted the sensitivy up and down, I adjusted the fish alarm to every possible setting. Had all day to play with it.

Some background, 2 trips ago it worked like a charm. Then previous trip the water was extremely muddy, the sensitivity was on 5 most of the day and the screen was a mess. there was a lot of clutter on the screen. I didn't have time to look into it then. When I got home I discovered the sensitivy was on 5 and assumed that was too sensitive for the muddy water. (0 is the default setting). May be related to current problem, I don't know

any suggestions? thanks
 
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